Commit | Line | Data |
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0d3244d6 MD |
1 | /* |
2 | * V4L2 Driver for SuperH Mobile CEU interface | |
3 | * | |
4 | * Copyright (C) 2008 Magnus Damm | |
5 | * | |
6 | * Based on V4L2 Driver for PXA camera host - "pxa_camera.c", | |
7 | * | |
8 | * Copyright (C) 2006, Sascha Hauer, Pengutronix | |
9 | * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de> | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or | |
14 | * (at your option) any later version. | |
15 | */ | |
16 | ||
17 | #include <linux/init.h> | |
18 | #include <linux/module.h> | |
19 | #include <linux/io.h> | |
3dac322d | 20 | #include <linux/completion.h> |
0d3244d6 MD |
21 | #include <linux/delay.h> |
22 | #include <linux/dma-mapping.h> | |
23 | #include <linux/errno.h> | |
24 | #include <linux/fs.h> | |
25 | #include <linux/interrupt.h> | |
26 | #include <linux/kernel.h> | |
27 | #include <linux/mm.h> | |
28 | #include <linux/moduleparam.h> | |
29 | #include <linux/time.h> | |
5a0e3ad6 | 30 | #include <linux/slab.h> |
0d3244d6 MD |
31 | #include <linux/device.h> |
32 | #include <linux/platform_device.h> | |
0d3244d6 | 33 | #include <linux/videodev2.h> |
6d1386c6 | 34 | #include <linux/pm_runtime.h> |
f39c1ab3 | 35 | #include <linux/sched.h> |
0d3244d6 MD |
36 | |
37 | #include <media/v4l2-common.h> | |
38 | #include <media/v4l2-dev.h> | |
39 | #include <media/soc_camera.h> | |
40 | #include <media/sh_mobile_ceu.h> | |
6b526fed | 41 | #include <media/sh_mobile_csi2.h> |
a616898d | 42 | #include <media/videobuf2-dma-contig.h> |
760697be GL |
43 | #include <media/v4l2-mediabus.h> |
44 | #include <media/soc_mediabus.h> | |
0d3244d6 MD |
45 | |
46 | /* register offsets for sh7722 / sh7723 */ | |
47 | ||
dd54203b MD |
48 | #define CAPSR 0x00 /* Capture start register */ |
49 | #define CAPCR 0x04 /* Capture control register */ | |
50 | #define CAMCR 0x08 /* Capture interface control register */ | |
51 | #define CMCYR 0x0c /* Capture interface cycle register */ | |
52 | #define CAMOR 0x10 /* Capture interface offset register */ | |
53 | #define CAPWR 0x14 /* Capture interface width register */ | |
54 | #define CAIFR 0x18 /* Capture interface input format register */ | |
55 | #define CSTCR 0x20 /* Camera strobe control register (<= sh7722) */ | |
56 | #define CSECR 0x24 /* Camera strobe emission count register (<= sh7722) */ | |
57 | #define CRCNTR 0x28 /* CEU register control register */ | |
58 | #define CRCMPR 0x2c /* CEU register forcible control register */ | |
59 | #define CFLCR 0x30 /* Capture filter control register */ | |
60 | #define CFSZR 0x34 /* Capture filter size clip register */ | |
61 | #define CDWDR 0x38 /* Capture destination width register */ | |
62 | #define CDAYR 0x3c /* Capture data address Y register */ | |
63 | #define CDACR 0x40 /* Capture data address C register */ | |
64 | #define CDBYR 0x44 /* Capture data bottom-field address Y register */ | |
65 | #define CDBCR 0x48 /* Capture data bottom-field address C register */ | |
66 | #define CBDSR 0x4c /* Capture bundle destination size register */ | |
67 | #define CFWCR 0x5c /* Firewall operation control register */ | |
68 | #define CLFCR 0x60 /* Capture low-pass filter control register */ | |
69 | #define CDOCR 0x64 /* Capture data output control register */ | |
70 | #define CDDCR 0x68 /* Capture data complexity level register */ | |
71 | #define CDDAR 0x6c /* Capture data complexity level address register */ | |
72 | #define CEIER 0x70 /* Capture event interrupt enable register */ | |
73 | #define CETCR 0x74 /* Capture event flag clear register */ | |
74 | #define CSTSR 0x7c /* Capture status register */ | |
75 | #define CSRTR 0x80 /* Capture software reset register */ | |
76 | #define CDSSR 0x84 /* Capture data size register */ | |
77 | #define CDAYR2 0x90 /* Capture data address Y register 2 */ | |
78 | #define CDACR2 0x94 /* Capture data address C register 2 */ | |
79 | #define CDBYR2 0x98 /* Capture data bottom-field address Y register 2 */ | |
80 | #define CDBCR2 0x9c /* Capture data bottom-field address C register 2 */ | |
0d3244d6 | 81 | |
6a6c8786 GL |
82 | #undef DEBUG_GEOMETRY |
83 | #ifdef DEBUG_GEOMETRY | |
84 | #define dev_geo dev_info | |
85 | #else | |
86 | #define dev_geo dev_dbg | |
87 | #endif | |
88 | ||
0d3244d6 MD |
89 | /* per video frame buffer */ |
90 | struct sh_mobile_ceu_buffer { | |
a616898d GL |
91 | struct vb2_buffer vb; /* v4l buffer must be first */ |
92 | struct list_head queue; | |
0d3244d6 MD |
93 | }; |
94 | ||
95 | struct sh_mobile_ceu_dev { | |
0d3244d6 MD |
96 | struct soc_camera_host ici; |
97 | struct soc_camera_device *icd; | |
6b526fed | 98 | struct platform_device *csi2_pdev; |
0d3244d6 MD |
99 | |
100 | unsigned int irq; | |
101 | void __iomem *base; | |
b5518a41 GL |
102 | size_t video_limit; |
103 | size_t buf_total; | |
0d3244d6 | 104 | |
a616898d | 105 | spinlock_t lock; /* Protects video buffer lists */ |
0d3244d6 | 106 | struct list_head capture; |
a616898d GL |
107 | struct vb2_buffer *active; |
108 | struct vb2_alloc_ctx *alloc_ctx; | |
0d3244d6 MD |
109 | |
110 | struct sh_mobile_ceu_info *pdata; | |
3dac322d | 111 | struct completion complete; |
8be65dc5 | 112 | |
961801bb GL |
113 | u32 cflcr; |
114 | ||
48e971cd GL |
115 | /* static max sizes either from platform data or default */ |
116 | int max_width; | |
117 | int max_height; | |
118 | ||
1edcc10d | 119 | enum v4l2_field field; |
a616898d | 120 | int sequence; |
1edcc10d | 121 | |
904078f1 GL |
122 | unsigned int image_mode:1; |
123 | unsigned int is_16bit:1; | |
3dac322d | 124 | unsigned int frozen:1; |
904078f1 GL |
125 | }; |
126 | ||
127 | struct sh_mobile_ceu_cam { | |
eec5ce01 | 128 | /* CEU offsets within the camera output, before the CEU scaler */ |
e622681d GL |
129 | unsigned int ceu_left; |
130 | unsigned int ceu_top; | |
131 | /* Client output, as seen by the CEU */ | |
132 | unsigned int width; | |
133 | unsigned int height; | |
134 | /* | |
135 | * User window from S_CROP / G_CROP, produced by client cropping and | |
136 | * scaling, CEU scaling and CEU cropping, mapped back onto the client | |
137 | * input window | |
138 | */ | |
139 | struct v4l2_rect subrect; | |
140 | /* Camera cropping rectangle */ | |
141 | struct v4l2_rect rect; | |
760697be GL |
142 | const struct soc_mbus_pixelfmt *extra_fmt; |
143 | enum v4l2_mbus_pixelcode code; | |
0d3244d6 MD |
144 | }; |
145 | ||
a616898d GL |
146 | static struct sh_mobile_ceu_buffer *to_ceu_vb(struct vb2_buffer *vb) |
147 | { | |
148 | return container_of(vb, struct sh_mobile_ceu_buffer, vb); | |
149 | } | |
150 | ||
0d3244d6 | 151 | static void ceu_write(struct sh_mobile_ceu_dev *priv, |
7a1a8164 | 152 | unsigned long reg_offs, u32 data) |
0d3244d6 MD |
153 | { |
154 | iowrite32(data, priv->base + reg_offs); | |
155 | } | |
156 | ||
7a1a8164 | 157 | static u32 ceu_read(struct sh_mobile_ceu_dev *priv, unsigned long reg_offs) |
0d3244d6 MD |
158 | { |
159 | return ioread32(priv->base + reg_offs); | |
160 | } | |
161 | ||
b1de7aeb KM |
162 | static int sh_mobile_ceu_soft_reset(struct sh_mobile_ceu_dev *pcdev) |
163 | { | |
164 | int i, success = 0; | |
165 | struct soc_camera_device *icd = pcdev->icd; | |
166 | ||
167 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset */ | |
168 | ||
169 | /* wait CSTSR.CPTON bit */ | |
170 | for (i = 0; i < 1000; i++) { | |
171 | if (!(ceu_read(pcdev, CSTSR) & 1)) { | |
172 | success++; | |
173 | break; | |
174 | } | |
175 | udelay(1); | |
176 | } | |
177 | ||
178 | /* wait CAPSR.CPKIL bit */ | |
179 | for (i = 0; i < 1000; i++) { | |
180 | if (!(ceu_read(pcdev, CAPSR) & (1 << 16))) { | |
181 | success++; | |
182 | break; | |
183 | } | |
184 | udelay(1); | |
185 | } | |
186 | ||
187 | ||
188 | if (2 != success) { | |
7dfff953 | 189 | dev_warn(icd->pdev, "soft reset time out\n"); |
b1de7aeb KM |
190 | return -EIO; |
191 | } | |
192 | ||
193 | return 0; | |
194 | } | |
195 | ||
0d3244d6 MD |
196 | /* |
197 | * Videobuf operations | |
198 | */ | |
b5518a41 GL |
199 | |
200 | /* | |
201 | * .queue_setup() is called to check, whether the driver can accept the | |
202 | * requested number of buffers and to fill in plane sizes | |
203 | * for the current frame format if required | |
204 | */ | |
a616898d | 205 | static int sh_mobile_ceu_videobuf_setup(struct vb2_queue *vq, |
fc714e70 | 206 | const struct v4l2_format *fmt, |
a616898d | 207 | unsigned int *count, unsigned int *num_planes, |
035aa147 | 208 | unsigned int sizes[], void *alloc_ctxs[]) |
0d3244d6 | 209 | { |
a616898d | 210 | struct soc_camera_device *icd = container_of(vq, struct soc_camera_device, vb2_vidq); |
7dfff953 | 211 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 212 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
0d3244d6 | 213 | |
b5518a41 GL |
214 | if (fmt) { |
215 | const struct soc_camera_format_xlate *xlate = soc_camera_xlate_by_fourcc(icd, | |
216 | fmt->fmt.pix.pixelformat); | |
bed8d803 LP |
217 | unsigned int bytes_per_line; |
218 | int ret; | |
2b61d46e | 219 | |
b5518a41 GL |
220 | if (!xlate) |
221 | return -EINVAL; | |
2b61d46e | 222 | |
bed8d803 LP |
223 | ret = soc_mbus_bytes_per_line(fmt->fmt.pix.width, |
224 | xlate->host_fmt); | |
225 | if (ret < 0) | |
226 | return ret; | |
2b61d46e | 227 | |
bed8d803 LP |
228 | bytes_per_line = max_t(u32, fmt->fmt.pix.bytesperline, ret); |
229 | ||
230 | ret = soc_mbus_image_size(xlate->host_fmt, bytes_per_line, | |
231 | fmt->fmt.pix.height); | |
232 | if (ret < 0) | |
233 | return ret; | |
234 | ||
235 | sizes[0] = max_t(u32, fmt->fmt.pix.sizeimage, ret); | |
b5518a41 GL |
236 | } else { |
237 | /* Called from VIDIOC_REQBUFS or in compatibility mode */ | |
2b61d46e | 238 | sizes[0] = icd->sizeimage; |
b5518a41 | 239 | } |
a616898d | 240 | |
a616898d | 241 | alloc_ctxs[0] = pcdev->alloc_ctx; |
0d3244d6 | 242 | |
b5518a41 GL |
243 | if (!vq->num_buffers) |
244 | pcdev->sequence = 0; | |
245 | ||
a616898d | 246 | if (!*count) |
0d3244d6 MD |
247 | *count = 2; |
248 | ||
b5518a41 GL |
249 | /* If *num_planes != 0, we have already verified *count. */ |
250 | if (pcdev->video_limit && !*num_planes) { | |
251 | size_t size = PAGE_ALIGN(sizes[0]) * *count; | |
252 | ||
253 | if (size + pcdev->buf_total > pcdev->video_limit) | |
254 | *count = (pcdev->video_limit - pcdev->buf_total) / | |
255 | PAGE_ALIGN(sizes[0]); | |
0d3244d6 MD |
256 | } |
257 | ||
b5518a41 GL |
258 | *num_planes = 1; |
259 | ||
035aa147 | 260 | dev_dbg(icd->parent, "count=%d, size=%u\n", *count, sizes[0]); |
0d3244d6 MD |
261 | |
262 | return 0; | |
263 | } | |
264 | ||
7a1a8164 MD |
265 | #define CEU_CETCR_MAGIC 0x0317f313 /* acknowledge magical interrupt sources */ |
266 | #define CEU_CETCR_IGRW (1 << 4) /* prohibited register access interrupt bit */ | |
267 | #define CEU_CEIER_CPEIE (1 << 0) /* one-frame capture end interrupt */ | |
5cf93f1d | 268 | #define CEU_CEIER_VBP (1 << 20) /* vbp error */ |
7a1a8164 | 269 | #define CEU_CAPCR_CTNCP (1 << 16) /* continuous capture mode (if set) */ |
5cf93f1d | 270 | #define CEU_CEIER_MASK (CEU_CEIER_CPEIE | CEU_CEIER_VBP) |
7a1a8164 MD |
271 | |
272 | ||
5cf93f1d KM |
273 | /* |
274 | * return value doesn't reflex the success/failure to queue the new buffer, | |
275 | * but rather the status of the previous buffer. | |
276 | */ | |
277 | static int sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev) | |
0d3244d6 | 278 | { |
8be65dc5 | 279 | struct soc_camera_device *icd = pcdev->icd; |
ccab8a29 | 280 | dma_addr_t phys_addr_top, phys_addr_bottom; |
1edcc10d KM |
281 | unsigned long top1, top2; |
282 | unsigned long bottom1, bottom2; | |
5cf93f1d | 283 | u32 status; |
15f517e2 | 284 | bool planar; |
5cf93f1d | 285 | int ret = 0; |
7a1a8164 | 286 | |
5d28d525 GL |
287 | /* |
288 | * The hardware is _very_ picky about this sequence. Especially | |
7a1a8164 MD |
289 | * the CEU_CETCR_MAGIC value. It seems like we need to acknowledge |
290 | * several not-so-well documented interrupt sources in CETCR. | |
291 | */ | |
5cf93f1d KM |
292 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) & ~CEU_CEIER_MASK); |
293 | status = ceu_read(pcdev, CETCR); | |
294 | ceu_write(pcdev, CETCR, ~status & CEU_CETCR_MAGIC); | |
3dac322d GL |
295 | if (!pcdev->frozen) |
296 | ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) | CEU_CEIER_MASK); | |
7a1a8164 MD |
297 | ceu_write(pcdev, CAPCR, ceu_read(pcdev, CAPCR) & ~CEU_CAPCR_CTNCP); |
298 | ceu_write(pcdev, CETCR, CEU_CETCR_MAGIC ^ CEU_CETCR_IGRW); | |
0d3244d6 | 299 | |
5cf93f1d KM |
300 | /* |
301 | * When a VBP interrupt occurs, a capture end interrupt does not occur | |
302 | * and the image of that frame is not captured correctly. So, soft reset | |
303 | * is needed here. | |
304 | */ | |
305 | if (status & CEU_CEIER_VBP) { | |
306 | sh_mobile_ceu_soft_reset(pcdev); | |
307 | ret = -EIO; | |
308 | } | |
309 | ||
3dac322d GL |
310 | if (pcdev->frozen) { |
311 | complete(&pcdev->complete); | |
312 | return ret; | |
313 | } | |
314 | ||
8be65dc5 | 315 | if (!pcdev->active) |
5cf93f1d | 316 | return ret; |
8be65dc5 | 317 | |
1edcc10d KM |
318 | if (V4L2_FIELD_INTERLACED_BT == pcdev->field) { |
319 | top1 = CDBYR; | |
320 | top2 = CDBCR; | |
321 | bottom1 = CDAYR; | |
322 | bottom2 = CDACR; | |
323 | } else { | |
324 | top1 = CDAYR; | |
325 | top2 = CDACR; | |
326 | bottom1 = CDBYR; | |
327 | bottom2 = CDBCR; | |
328 | } | |
329 | ||
ba7fcb0c | 330 | phys_addr_top = vb2_dma_contig_plane_dma_addr(pcdev->active, 0); |
a616898d | 331 | |
760697be | 332 | switch (icd->current_fmt->host_fmt->fourcc) { |
8be65dc5 MD |
333 | case V4L2_PIX_FMT_NV12: |
334 | case V4L2_PIX_FMT_NV21: | |
9e4a56d2 MD |
335 | case V4L2_PIX_FMT_NV16: |
336 | case V4L2_PIX_FMT_NV61: | |
15f517e2 GL |
337 | planar = true; |
338 | break; | |
339 | default: | |
340 | planar = false; | |
341 | } | |
342 | ||
343 | ceu_write(pcdev, top1, phys_addr_top); | |
344 | if (V4L2_FIELD_NONE != pcdev->field) { | |
fc13baff | 345 | phys_addr_bottom = phys_addr_top + icd->bytesperline; |
15f517e2 GL |
346 | ceu_write(pcdev, bottom1, phys_addr_bottom); |
347 | } | |
348 | ||
349 | if (planar) { | |
fc13baff | 350 | phys_addr_top += icd->bytesperline * icd->user_height; |
1edcc10d KM |
351 | ceu_write(pcdev, top2, phys_addr_top); |
352 | if (V4L2_FIELD_NONE != pcdev->field) { | |
fc13baff | 353 | phys_addr_bottom = phys_addr_top + icd->bytesperline; |
1edcc10d | 354 | ceu_write(pcdev, bottom2, phys_addr_bottom); |
ccab8a29 | 355 | } |
0d3244d6 | 356 | } |
8be65dc5 | 357 | |
8be65dc5 | 358 | ceu_write(pcdev, CAPSR, 0x1); /* start capture */ |
5cf93f1d KM |
359 | |
360 | return ret; | |
0d3244d6 MD |
361 | } |
362 | ||
a616898d | 363 | static int sh_mobile_ceu_videobuf_prepare(struct vb2_buffer *vb) |
b5518a41 GL |
364 | { |
365 | struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vb); | |
366 | ||
367 | /* Added list head initialization on alloc */ | |
368 | WARN(!list_empty(&buf->queue), "Buffer %p on queue!\n", vb); | |
369 | ||
370 | return 0; | |
371 | } | |
372 | ||
373 | static void sh_mobile_ceu_videobuf_queue(struct vb2_buffer *vb) | |
0d3244d6 | 374 | { |
a616898d | 375 | struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq); |
b5518a41 GL |
376 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
377 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
378 | struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vb); | |
379 | unsigned long size; | |
760697be | 380 | |
2b61d46e | 381 | size = icd->sizeimage; |
b5518a41 GL |
382 | |
383 | if (vb2_plane_size(vb, 0) < size) { | |
384 | dev_err(icd->parent, "Buffer #%d too small (%lu < %lu)\n", | |
385 | vb->v4l2_buf.index, vb2_plane_size(vb, 0), size); | |
386 | goto error; | |
387 | } | |
388 | ||
389 | vb2_set_plane_payload(vb, 0, size); | |
0d3244d6 | 390 | |
7dfff953 | 391 | dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, |
a616898d | 392 | vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); |
0d3244d6 | 393 | |
0d3244d6 | 394 | #ifdef DEBUG |
5d28d525 GL |
395 | /* |
396 | * This can be useful if you want to see if we actually fill | |
397 | * the buffer with something | |
398 | */ | |
a616898d GL |
399 | if (vb2_plane_vaddr(vb, 0)) |
400 | memset(vb2_plane_vaddr(vb, 0), 0xaa, vb2_get_plane_payload(vb, 0)); | |
0d3244d6 MD |
401 | #endif |
402 | ||
3dac322d | 403 | spin_lock_irq(&pcdev->lock); |
a616898d | 404 | list_add_tail(&buf->queue, &pcdev->capture); |
0d3244d6 MD |
405 | |
406 | if (!pcdev->active) { | |
5cf93f1d KM |
407 | /* |
408 | * Because there were no active buffer at this moment, | |
409 | * we are not interested in the return value of | |
410 | * sh_mobile_ceu_capture here. | |
411 | */ | |
0d3244d6 MD |
412 | pcdev->active = vb; |
413 | sh_mobile_ceu_capture(pcdev); | |
414 | } | |
3dac322d | 415 | spin_unlock_irq(&pcdev->lock); |
b5518a41 GL |
416 | |
417 | return; | |
418 | ||
419 | error: | |
420 | vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); | |
0d3244d6 MD |
421 | } |
422 | ||
a616898d | 423 | static void sh_mobile_ceu_videobuf_release(struct vb2_buffer *vb) |
0d3244d6 | 424 | { |
a616898d | 425 | struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq); |
7dfff953 | 426 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
a616898d | 427 | struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vb); |
cca0e549 | 428 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
cca0e549 | 429 | |
3dac322d | 430 | spin_lock_irq(&pcdev->lock); |
cca0e549 GL |
431 | |
432 | if (pcdev->active == vb) { | |
433 | /* disable capture (release DMA buffer), reset */ | |
434 | ceu_write(pcdev, CAPSR, 1 << 16); | |
435 | pcdev->active = NULL; | |
436 | } | |
437 | ||
cb74cf53 GL |
438 | /* |
439 | * Doesn't hurt also if the list is empty, but it hurts, if queuing the | |
440 | * buffer failed, and .buf_init() hasn't been called | |
441 | */ | |
442 | if (buf->queue.next) | |
443 | list_del_init(&buf->queue); | |
cca0e549 | 444 | |
b5518a41 GL |
445 | pcdev->buf_total -= PAGE_ALIGN(vb2_plane_size(vb, 0)); |
446 | dev_dbg(icd->parent, "%s() %zu bytes buffers\n", __func__, | |
447 | pcdev->buf_total); | |
448 | ||
3dac322d | 449 | spin_unlock_irq(&pcdev->lock); |
a616898d | 450 | } |
cca0e549 | 451 | |
a616898d GL |
452 | static int sh_mobile_ceu_videobuf_init(struct vb2_buffer *vb) |
453 | { | |
b5518a41 GL |
454 | struct soc_camera_device *icd = container_of(vb->vb2_queue, struct soc_camera_device, vb2_vidq); |
455 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
456 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
457 | ||
458 | pcdev->buf_total += PAGE_ALIGN(vb2_plane_size(vb, 0)); | |
459 | dev_dbg(icd->parent, "%s() %zu bytes buffers\n", __func__, | |
460 | pcdev->buf_total); | |
461 | ||
a616898d GL |
462 | /* This is for locking debugging only */ |
463 | INIT_LIST_HEAD(&to_ceu_vb(vb)->queue); | |
464 | return 0; | |
0d3244d6 MD |
465 | } |
466 | ||
066f7867 GL |
467 | static int sh_mobile_ceu_stop_streaming(struct vb2_queue *q) |
468 | { | |
469 | struct soc_camera_device *icd = container_of(q, struct soc_camera_device, vb2_vidq); | |
7dfff953 | 470 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
066f7867 GL |
471 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
472 | struct list_head *buf_head, *tmp; | |
066f7867 | 473 | |
3dac322d | 474 | spin_lock_irq(&pcdev->lock); |
066f7867 GL |
475 | |
476 | pcdev->active = NULL; | |
477 | ||
478 | list_for_each_safe(buf_head, tmp, &pcdev->capture) | |
479 | list_del_init(buf_head); | |
480 | ||
3dac322d | 481 | spin_unlock_irq(&pcdev->lock); |
066f7867 GL |
482 | |
483 | return sh_mobile_ceu_soft_reset(pcdev); | |
484 | } | |
485 | ||
a616898d GL |
486 | static struct vb2_ops sh_mobile_ceu_videobuf_ops = { |
487 | .queue_setup = sh_mobile_ceu_videobuf_setup, | |
488 | .buf_prepare = sh_mobile_ceu_videobuf_prepare, | |
489 | .buf_queue = sh_mobile_ceu_videobuf_queue, | |
490 | .buf_cleanup = sh_mobile_ceu_videobuf_release, | |
491 | .buf_init = sh_mobile_ceu_videobuf_init, | |
492 | .wait_prepare = soc_camera_unlock, | |
493 | .wait_finish = soc_camera_lock, | |
066f7867 | 494 | .stop_streaming = sh_mobile_ceu_stop_streaming, |
0d3244d6 MD |
495 | }; |
496 | ||
497 | static irqreturn_t sh_mobile_ceu_irq(int irq, void *data) | |
498 | { | |
499 | struct sh_mobile_ceu_dev *pcdev = data; | |
a616898d GL |
500 | struct vb2_buffer *vb; |
501 | int ret; | |
0d3244d6 | 502 | |
a616898d | 503 | spin_lock(&pcdev->lock); |
0d3244d6 MD |
504 | |
505 | vb = pcdev->active; | |
cca0e549 GL |
506 | if (!vb) |
507 | /* Stale interrupt from a released buffer */ | |
508 | goto out; | |
509 | ||
a616898d | 510 | list_del_init(&to_ceu_vb(vb)->queue); |
0d3244d6 MD |
511 | |
512 | if (!list_empty(&pcdev->capture)) | |
a616898d GL |
513 | pcdev->active = &list_entry(pcdev->capture.next, |
514 | struct sh_mobile_ceu_buffer, queue)->vb; | |
0d3244d6 MD |
515 | else |
516 | pcdev->active = NULL; | |
517 | ||
a616898d GL |
518 | ret = sh_mobile_ceu_capture(pcdev); |
519 | do_gettimeofday(&vb->v4l2_buf.timestamp); | |
520 | if (!ret) { | |
521 | vb->v4l2_buf.field = pcdev->field; | |
522 | vb->v4l2_buf.sequence = pcdev->sequence++; | |
523 | } | |
524 | vb2_buffer_done(vb, ret < 0 ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE); | |
cca0e549 GL |
525 | |
526 | out: | |
a616898d | 527 | spin_unlock(&pcdev->lock); |
0d3244d6 MD |
528 | |
529 | return IRQ_HANDLED; | |
530 | } | |
531 | ||
6b526fed GL |
532 | static struct v4l2_subdev *find_csi2(struct sh_mobile_ceu_dev *pcdev) |
533 | { | |
534 | struct v4l2_subdev *sd; | |
535 | ||
536 | if (!pcdev->csi2_pdev) | |
537 | return NULL; | |
538 | ||
539 | v4l2_device_for_each_subdev(sd, &pcdev->ici.v4l2_dev) | |
540 | if (&pcdev->csi2_pdev->dev == v4l2_get_subdevdata(sd)) | |
541 | return sd; | |
542 | ||
543 | return NULL; | |
544 | } | |
545 | ||
1c3bb743 | 546 | /* Called with .video_lock held */ |
0d3244d6 MD |
547 | static int sh_mobile_ceu_add_device(struct soc_camera_device *icd) |
548 | { | |
7dfff953 | 549 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 550 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
6b526fed | 551 | struct v4l2_subdev *csi2_sd; |
6ed7c038 | 552 | int ret; |
0d3244d6 | 553 | |
0d3244d6 | 554 | if (pcdev->icd) |
979ea1dd | 555 | return -EBUSY; |
0d3244d6 | 556 | |
7dfff953 | 557 | dev_info(icd->parent, |
0d3244d6 MD |
558 | "SuperH Mobile CEU driver attached to camera %d\n", |
559 | icd->devnum); | |
560 | ||
a79aebfc | 561 | pm_runtime_get_sync(ici->v4l2_dev.dev); |
40e2e092 | 562 | |
b5518a41 GL |
563 | pcdev->buf_total = 0; |
564 | ||
6ed7c038 | 565 | ret = sh_mobile_ceu_soft_reset(pcdev); |
6b526fed GL |
566 | |
567 | csi2_sd = find_csi2(pcdev); | |
4c0b036d GL |
568 | if (csi2_sd) { |
569 | csi2_sd->grp_id = soc_camera_grp_id(icd); | |
570 | v4l2_set_subdev_hostdata(csi2_sd, icd); | |
571 | } | |
6b526fed GL |
572 | |
573 | ret = v4l2_subdev_call(csi2_sd, core, s_power, 1); | |
489759c0 | 574 | if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV) { |
6b526fed | 575 | pm_runtime_put_sync(ici->v4l2_dev.dev); |
489759c0 | 576 | return ret; |
6b526fed | 577 | } |
979ea1dd | 578 | |
489759c0 GL |
579 | /* |
580 | * -ENODEV is special: either csi2_sd == NULL or the CSI-2 driver | |
581 | * has not found this soc-camera device among its clients | |
582 | */ | |
583 | if (ret == -ENODEV && csi2_sd) | |
584 | csi2_sd->grp_id = 0; | |
585 | pcdev->icd = icd; | |
586 | ||
587 | return 0; | |
0d3244d6 MD |
588 | } |
589 | ||
1c3bb743 | 590 | /* Called with .video_lock held */ |
0d3244d6 MD |
591 | static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd) |
592 | { | |
7dfff953 | 593 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 594 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
6b526fed | 595 | struct v4l2_subdev *csi2_sd = find_csi2(pcdev); |
0d3244d6 MD |
596 | |
597 | BUG_ON(icd != pcdev->icd); | |
598 | ||
6b526fed | 599 | v4l2_subdev_call(csi2_sd, core, s_power, 0); |
489759c0 GL |
600 | if (csi2_sd) |
601 | csi2_sd->grp_id = 0; | |
0d3244d6 MD |
602 | /* disable capture, disable interrupts */ |
603 | ceu_write(pcdev, CEIER, 0); | |
b1de7aeb | 604 | sh_mobile_ceu_soft_reset(pcdev); |
51354cc3 MD |
605 | |
606 | /* make sure active buffer is canceled */ | |
3dac322d | 607 | spin_lock_irq(&pcdev->lock); |
51354cc3 | 608 | if (pcdev->active) { |
a616898d GL |
609 | list_del_init(&to_ceu_vb(pcdev->active)->queue); |
610 | vb2_buffer_done(pcdev->active, VB2_BUF_STATE_ERROR); | |
51354cc3 MD |
611 | pcdev->active = NULL; |
612 | } | |
3dac322d | 613 | spin_unlock_irq(&pcdev->lock); |
51354cc3 | 614 | |
a79aebfc | 615 | pm_runtime_put_sync(ici->v4l2_dev.dev); |
40e2e092 | 616 | |
7dfff953 | 617 | dev_info(icd->parent, |
0d3244d6 MD |
618 | "SuperH Mobile CEU driver detached from camera %d\n", |
619 | icd->devnum); | |
620 | ||
621 | pcdev->icd = NULL; | |
622 | } | |
623 | ||
961801bb GL |
624 | /* |
625 | * See chapter 29.4.12 "Capture Filter Control Register (CFLCR)" | |
626 | * in SH7722 Hardware Manual | |
627 | */ | |
628 | static unsigned int size_dst(unsigned int src, unsigned int scale) | |
629 | { | |
630 | unsigned int mant_pre = scale >> 12; | |
631 | if (!src || !scale) | |
632 | return src; | |
633 | return ((mant_pre + 2 * (src - 1)) / (2 * mant_pre) - 1) * | |
634 | mant_pre * 4096 / scale + 1; | |
635 | } | |
636 | ||
961801bb GL |
637 | static u16 calc_scale(unsigned int src, unsigned int *dst) |
638 | { | |
639 | u16 scale; | |
640 | ||
641 | if (src == *dst) | |
642 | return 0; | |
643 | ||
644 | scale = (src * 4096 / *dst) & ~7; | |
645 | ||
646 | while (scale > 4096 && size_dst(src, scale) < *dst) | |
647 | scale -= 8; | |
648 | ||
649 | *dst = size_dst(src, scale); | |
650 | ||
651 | return scale; | |
652 | } | |
653 | ||
654 | /* rect is guaranteed to not exceed the scaled camera rectangle */ | |
e622681d | 655 | static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd) |
904078f1 | 656 | { |
7dfff953 | 657 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
904078f1 GL |
658 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
659 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
6a6c8786 GL |
660 | unsigned int height, width, cdwdr_width, in_width, in_height; |
661 | unsigned int left_offset, top_offset; | |
904078f1 GL |
662 | u32 camor; |
663 | ||
7dfff953 | 664 | dev_geo(icd->parent, "Crop %ux%u@%u:%u\n", |
e622681d | 665 | icd->user_width, icd->user_height, cam->ceu_left, cam->ceu_top); |
904078f1 | 666 | |
e622681d GL |
667 | left_offset = cam->ceu_left; |
668 | top_offset = cam->ceu_top; | |
904078f1 | 669 | |
eec5ce01 GL |
670 | WARN_ON(icd->user_width & 3 || icd->user_height & 3); |
671 | ||
672 | width = icd->user_width; | |
673 | ||
904078f1 | 674 | if (pcdev->image_mode) { |
e622681d | 675 | in_width = cam->width; |
961801bb | 676 | if (!pcdev->is_16bit) { |
961801bb GL |
677 | in_width *= 2; |
678 | left_offset *= 2; | |
679 | } | |
904078f1 | 680 | } else { |
760697be | 681 | unsigned int w_factor; |
6a6c8786 | 682 | |
760697be GL |
683 | switch (icd->current_fmt->host_fmt->packing) { |
684 | case SOC_MBUS_PACKING_2X8_PADHI: | |
685 | w_factor = 2; | |
686 | break; | |
687 | default: | |
688 | w_factor = 1; | |
689 | } | |
961801bb | 690 | |
e622681d | 691 | in_width = cam->width * w_factor; |
eec5ce01 | 692 | left_offset *= w_factor; |
904078f1 GL |
693 | } |
694 | ||
fc13baff LP |
695 | cdwdr_width = icd->bytesperline; |
696 | ||
e622681d GL |
697 | height = icd->user_height; |
698 | in_height = cam->height; | |
1edcc10d | 699 | if (V4L2_FIELD_NONE != pcdev->field) { |
eec5ce01 | 700 | height = (height / 2) & ~3; |
961801bb GL |
701 | in_height /= 2; |
702 | top_offset /= 2; | |
904078f1 GL |
703 | cdwdr_width *= 2; |
704 | } | |
705 | ||
b3b5020d | 706 | /* CSI2 special configuration */ |
6b526fed | 707 | if (pcdev->pdata->csi2) { |
b3b5020d GL |
708 | in_width = ((in_width - 2) * 2); |
709 | left_offset *= 2; | |
710 | } | |
711 | ||
6a6c8786 | 712 | /* Set CAMOR, CAPWR, CFSZR, take care of CDWDR */ |
904078f1 | 713 | camor = left_offset | (top_offset << 16); |
6a6c8786 | 714 | |
7dfff953 | 715 | dev_geo(icd->parent, |
6a6c8786 GL |
716 | "CAMOR 0x%x, CAPWR 0x%x, CFSZR 0x%x, CDWDR 0x%x\n", camor, |
717 | (in_height << 16) | in_width, (height << 16) | width, | |
718 | cdwdr_width); | |
719 | ||
904078f1 | 720 | ceu_write(pcdev, CAMOR, camor); |
961801bb | 721 | ceu_write(pcdev, CAPWR, (in_height << 16) | in_width); |
eec5ce01 | 722 | /* CFSZR clipping is applied _after_ the scaling filter (CFLCR) */ |
6a6c8786 | 723 | ceu_write(pcdev, CFSZR, (height << 16) | width); |
904078f1 GL |
724 | ceu_write(pcdev, CDWDR, cdwdr_width); |
725 | } | |
726 | ||
727 | static u32 capture_save_reset(struct sh_mobile_ceu_dev *pcdev) | |
728 | { | |
729 | u32 capsr = ceu_read(pcdev, CAPSR); | |
730 | ceu_write(pcdev, CAPSR, 1 << 16); /* reset, stop capture */ | |
731 | return capsr; | |
732 | } | |
733 | ||
734 | static void capture_restore(struct sh_mobile_ceu_dev *pcdev, u32 capsr) | |
735 | { | |
736 | unsigned long timeout = jiffies + 10 * HZ; | |
737 | ||
738 | /* | |
739 | * Wait until the end of the current frame. It can take a long time, | |
740 | * but if it has been aborted by a CAPSR reset, it shoule exit sooner. | |
741 | */ | |
742 | while ((ceu_read(pcdev, CSTSR) & 1) && time_before(jiffies, timeout)) | |
743 | msleep(1); | |
744 | ||
745 | if (time_after(jiffies, timeout)) { | |
746 | dev_err(pcdev->ici.v4l2_dev.dev, | |
747 | "Timeout waiting for frame end! Interface problem?\n"); | |
748 | return; | |
749 | } | |
750 | ||
751 | /* Wait until reset clears, this shall not hang... */ | |
752 | while (ceu_read(pcdev, CAPSR) & (1 << 16)) | |
753 | udelay(10); | |
754 | ||
755 | /* Anything to restore? */ | |
756 | if (capsr & ~(1 << 16)) | |
757 | ceu_write(pcdev, CAPSR, capsr); | |
758 | } | |
759 | ||
e1db7043 GL |
760 | /* Find the bus subdevice driver, e.g., CSI2 */ |
761 | static struct v4l2_subdev *find_bus_subdev(struct sh_mobile_ceu_dev *pcdev, | |
762 | struct soc_camera_device *icd) | |
763 | { | |
6ac939c0 GL |
764 | if (pcdev->csi2_pdev) { |
765 | struct v4l2_subdev *csi2_sd = find_csi2(pcdev); | |
4c0b036d | 766 | if (csi2_sd && csi2_sd->grp_id == soc_camera_grp_id(icd)) |
6ac939c0 GL |
767 | return csi2_sd; |
768 | } | |
e1db7043 | 769 | |
6ac939c0 | 770 | return soc_camera_to_subdev(icd); |
e1db7043 GL |
771 | } |
772 | ||
773 | #define CEU_BUS_FLAGS (V4L2_MBUS_MASTER | \ | |
774 | V4L2_MBUS_PCLK_SAMPLE_RISING | \ | |
775 | V4L2_MBUS_HSYNC_ACTIVE_HIGH | \ | |
776 | V4L2_MBUS_HSYNC_ACTIVE_LOW | \ | |
777 | V4L2_MBUS_VSYNC_ACTIVE_HIGH | \ | |
778 | V4L2_MBUS_VSYNC_ACTIVE_LOW | \ | |
779 | V4L2_MBUS_DATA_ACTIVE_HIGH) | |
780 | ||
a616898d | 781 | /* Capture is not running, no interrupts, no locking needed */ |
8843d119 | 782 | static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd) |
0d3244d6 | 783 | { |
7dfff953 | 784 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 785 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
e1db7043 | 786 | struct v4l2_subdev *sd = find_bus_subdev(pcdev, icd); |
904078f1 | 787 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
e1db7043 GL |
788 | struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; |
789 | unsigned long value, common_flags = CEU_BUS_FLAGS; | |
904078f1 | 790 | u32 capsr = capture_save_reset(pcdev); |
e1db7043 GL |
791 | unsigned int yuv_lineskip; |
792 | int ret; | |
0d3244d6 | 793 | |
e1db7043 GL |
794 | /* |
795 | * If the client doesn't implement g_mbus_config, we just use our | |
796 | * platform data | |
797 | */ | |
798 | ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); | |
799 | if (!ret) { | |
800 | common_flags = soc_mbus_config_compatible(&cfg, | |
801 | common_flags); | |
802 | if (!common_flags) | |
803 | return -EINVAL; | |
804 | } else if (ret != -ENOIOCTLCMD) { | |
805 | return ret; | |
806 | } | |
0d3244d6 | 807 | |
85dc1cff | 808 | /* Make choises, based on platform preferences */ |
e1db7043 GL |
809 | if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) && |
810 | (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) { | |
85dc1cff | 811 | if (pcdev->pdata->flags & SH_CEU_FLAG_HSYNC_LOW) |
e1db7043 | 812 | common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH; |
85dc1cff | 813 | else |
e1db7043 | 814 | common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW; |
85dc1cff KM |
815 | } |
816 | ||
e1db7043 GL |
817 | if ((common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) && |
818 | (common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) { | |
85dc1cff | 819 | if (pcdev->pdata->flags & SH_CEU_FLAG_VSYNC_LOW) |
e1db7043 | 820 | common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_HIGH; |
85dc1cff | 821 | else |
e1db7043 | 822 | common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_LOW; |
85dc1cff KM |
823 | } |
824 | ||
e1db7043 GL |
825 | cfg.flags = common_flags; |
826 | ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg); | |
827 | if (ret < 0 && ret != -ENOIOCTLCMD) | |
0d3244d6 MD |
828 | return ret; |
829 | ||
e1db7043 | 830 | if (icd->current_fmt->host_fmt->bits_per_sample > 8) |
904078f1 | 831 | pcdev->is_16bit = 1; |
e1db7043 GL |
832 | else |
833 | pcdev->is_16bit = 0; | |
0d3244d6 MD |
834 | |
835 | ceu_write(pcdev, CRCNTR, 0); | |
836 | ceu_write(pcdev, CRCMPR, 0); | |
837 | ||
8be65dc5 | 838 | value = 0x00000010; /* data fetch by default */ |
e1db7043 | 839 | yuv_lineskip = 0x10; |
8be65dc5 | 840 | |
760697be | 841 | switch (icd->current_fmt->host_fmt->fourcc) { |
8be65dc5 MD |
842 | case V4L2_PIX_FMT_NV12: |
843 | case V4L2_PIX_FMT_NV21: | |
e1db7043 GL |
844 | /* convert 4:2:2 -> 4:2:0 */ |
845 | yuv_lineskip = 0; /* skip for NV12/21, no skip for NV16/61 */ | |
9e4a56d2 MD |
846 | /* fall-through */ |
847 | case V4L2_PIX_FMT_NV16: | |
848 | case V4L2_PIX_FMT_NV61: | |
760697be | 849 | switch (cam->code) { |
ace6e979 | 850 | case V4L2_MBUS_FMT_UYVY8_2X8: |
8be65dc5 MD |
851 | value = 0x00000000; /* Cb0, Y0, Cr0, Y1 */ |
852 | break; | |
ace6e979 | 853 | case V4L2_MBUS_FMT_VYUY8_2X8: |
8be65dc5 MD |
854 | value = 0x00000100; /* Cr0, Y0, Cb0, Y1 */ |
855 | break; | |
ace6e979 | 856 | case V4L2_MBUS_FMT_YUYV8_2X8: |
8be65dc5 MD |
857 | value = 0x00000200; /* Y0, Cb0, Y1, Cr0 */ |
858 | break; | |
ace6e979 | 859 | case V4L2_MBUS_FMT_YVYU8_2X8: |
8be65dc5 MD |
860 | value = 0x00000300; /* Y0, Cr0, Y1, Cb0 */ |
861 | break; | |
862 | default: | |
863 | BUG(); | |
864 | } | |
865 | } | |
866 | ||
760697be GL |
867 | if (icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV21 || |
868 | icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV61) | |
9e4a56d2 | 869 | value ^= 0x00000100; /* swap U, V to change from NV1x->NVx1 */ |
8be65dc5 | 870 | |
e1db7043 GL |
871 | value |= common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW ? 1 << 1 : 0; |
872 | value |= common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW ? 1 << 0 : 0; | |
904078f1 | 873 | value |= pcdev->is_16bit ? 1 << 12 : 0; |
b3b5020d GL |
874 | |
875 | /* CSI2 mode */ | |
6b526fed | 876 | if (pcdev->pdata->csi2) |
b3b5020d GL |
877 | value |= 3 << 12; |
878 | ||
0d3244d6 MD |
879 | ceu_write(pcdev, CAMCR, value); |
880 | ||
881 | ceu_write(pcdev, CAPCR, 0x00300000); | |
1edcc10d KM |
882 | |
883 | switch (pcdev->field) { | |
884 | case V4L2_FIELD_INTERLACED_TB: | |
885 | value = 0x101; | |
886 | break; | |
887 | case V4L2_FIELD_INTERLACED_BT: | |
888 | value = 0x102; | |
889 | break; | |
890 | default: | |
891 | value = 0; | |
892 | break; | |
893 | } | |
894 | ceu_write(pcdev, CAIFR, value); | |
0d3244d6 | 895 | |
e622681d | 896 | sh_mobile_ceu_set_rect(icd); |
0d3244d6 MD |
897 | mdelay(1); |
898 | ||
7dfff953 | 899 | dev_geo(icd->parent, "CFLCR 0x%x\n", pcdev->cflcr); |
961801bb | 900 | ceu_write(pcdev, CFLCR, pcdev->cflcr); |
dd54203b | 901 | |
5d28d525 GL |
902 | /* |
903 | * A few words about byte order (observed in Big Endian mode) | |
dd54203b MD |
904 | * |
905 | * In data fetch mode bytes are received in chunks of 8 bytes. | |
906 | * D0, D1, D2, D3, D4, D5, D6, D7 (D0 received first) | |
907 | * | |
908 | * The data is however by default written to memory in reverse order: | |
909 | * D7, D6, D5, D4, D3, D2, D1, D0 (D7 written to lowest byte) | |
910 | * | |
911 | * The lowest three bits of CDOCR allows us to do swapping, | |
2c0a072e MD |
912 | * using 7 we swap the data bytes to match the incoming order: |
913 | * D0, D1, D2, D3, D4, D5, D6, D7 | |
dd54203b | 914 | */ |
e1db7043 | 915 | value = 0x00000007 | yuv_lineskip; |
8be65dc5 MD |
916 | |
917 | ceu_write(pcdev, CDOCR, value); | |
0d3244d6 MD |
918 | ceu_write(pcdev, CFWCR, 0); /* keep "datafetch firewall" disabled */ |
919 | ||
904078f1 GL |
920 | capture_restore(pcdev, capsr); |
921 | ||
0d3244d6 | 922 | /* not in bundle mode: skip CBDSR, CDAYR2, CDACR2, CDBYR2, CDBCR2 */ |
0d3244d6 MD |
923 | return 0; |
924 | } | |
925 | ||
760697be GL |
926 | static int sh_mobile_ceu_try_bus_param(struct soc_camera_device *icd, |
927 | unsigned char buswidth) | |
0d3244d6 | 928 | { |
7dfff953 | 929 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
0d3244d6 | 930 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
e1db7043 GL |
931 | struct v4l2_subdev *sd = find_bus_subdev(pcdev, icd); |
932 | unsigned long common_flags = CEU_BUS_FLAGS; | |
933 | struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; | |
934 | int ret; | |
0d3244d6 | 935 | |
e1db7043 GL |
936 | ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); |
937 | if (!ret) | |
938 | common_flags = soc_mbus_config_compatible(&cfg, | |
939 | common_flags); | |
940 | else if (ret != -ENOIOCTLCMD) | |
941 | return ret; | |
942 | ||
943 | if (!common_flags || buswidth > 16) | |
0d3244d6 MD |
944 | return -EINVAL; |
945 | ||
946 | return 0; | |
947 | } | |
948 | ||
760697be | 949 | static const struct soc_mbus_pixelfmt sh_mobile_ceu_formats[] = { |
9e4a56d2 | 950 | { |
760697be GL |
951 | .fourcc = V4L2_PIX_FMT_NV12, |
952 | .name = "NV12", | |
e1db7043 GL |
953 | .bits_per_sample = 8, |
954 | .packing = SOC_MBUS_PACKING_1_5X8, | |
760697be | 955 | .order = SOC_MBUS_ORDER_LE, |
ad3b81fa | 956 | .layout = SOC_MBUS_LAYOUT_PLANAR_2Y_C, |
760697be GL |
957 | }, { |
958 | .fourcc = V4L2_PIX_FMT_NV21, | |
959 | .name = "NV21", | |
e1db7043 GL |
960 | .bits_per_sample = 8, |
961 | .packing = SOC_MBUS_PACKING_1_5X8, | |
760697be | 962 | .order = SOC_MBUS_ORDER_LE, |
ad3b81fa | 963 | .layout = SOC_MBUS_LAYOUT_PLANAR_2Y_C, |
760697be GL |
964 | }, { |
965 | .fourcc = V4L2_PIX_FMT_NV16, | |
966 | .name = "NV16", | |
e1db7043 GL |
967 | .bits_per_sample = 8, |
968 | .packing = SOC_MBUS_PACKING_2X8_PADHI, | |
760697be | 969 | .order = SOC_MBUS_ORDER_LE, |
ad3b81fa | 970 | .layout = SOC_MBUS_LAYOUT_PLANAR_Y_C, |
760697be GL |
971 | }, { |
972 | .fourcc = V4L2_PIX_FMT_NV61, | |
973 | .name = "NV61", | |
e1db7043 GL |
974 | .bits_per_sample = 8, |
975 | .packing = SOC_MBUS_PACKING_2X8_PADHI, | |
760697be | 976 | .order = SOC_MBUS_ORDER_LE, |
ad3b81fa | 977 | .layout = SOC_MBUS_LAYOUT_PLANAR_Y_C, |
9e4a56d2 | 978 | }, |
8be65dc5 MD |
979 | }; |
980 | ||
760697be GL |
981 | /* This will be corrected as we get more formats */ |
982 | static bool sh_mobile_ceu_packing_supported(const struct soc_mbus_pixelfmt *fmt) | |
983 | { | |
984 | return fmt->packing == SOC_MBUS_PACKING_NONE || | |
e1db7043 GL |
985 | (fmt->bits_per_sample == 8 && |
986 | fmt->packing == SOC_MBUS_PACKING_1_5X8) || | |
760697be GL |
987 | (fmt->bits_per_sample == 8 && |
988 | fmt->packing == SOC_MBUS_PACKING_2X8_PADHI) || | |
989 | (fmt->bits_per_sample > 8 && | |
990 | fmt->packing == SOC_MBUS_PACKING_EXTEND16); | |
991 | } | |
992 | ||
e622681d GL |
993 | static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect); |
994 | ||
d34bfcd2 HV |
995 | static struct soc_camera_device *ctrl_to_icd(struct v4l2_ctrl *ctrl) |
996 | { | |
997 | return container_of(ctrl->handler, struct soc_camera_device, | |
998 | ctrl_handler); | |
999 | } | |
1000 | ||
1001 | static int sh_mobile_ceu_s_ctrl(struct v4l2_ctrl *ctrl) | |
1002 | { | |
1003 | struct soc_camera_device *icd = ctrl_to_icd(ctrl); | |
1004 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); | |
1005 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
1006 | ||
1007 | switch (ctrl->id) { | |
1008 | case V4L2_CID_SHARPNESS: | |
1009 | switch (icd->current_fmt->host_fmt->fourcc) { | |
1010 | case V4L2_PIX_FMT_NV12: | |
1011 | case V4L2_PIX_FMT_NV21: | |
1012 | case V4L2_PIX_FMT_NV16: | |
1013 | case V4L2_PIX_FMT_NV61: | |
1014 | ceu_write(pcdev, CLFCR, !ctrl->val); | |
1015 | return 0; | |
1016 | } | |
1017 | break; | |
1018 | } | |
1019 | ||
1020 | return -EINVAL; | |
1021 | } | |
1022 | ||
1023 | static const struct v4l2_ctrl_ops sh_mobile_ceu_ctrl_ops = { | |
1024 | .s_ctrl = sh_mobile_ceu_s_ctrl, | |
1025 | }; | |
1026 | ||
3805f201 | 1027 | static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, unsigned int idx, |
9414de39 MD |
1028 | struct soc_camera_format_xlate *xlate) |
1029 | { | |
760697be | 1030 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
7dfff953 | 1031 | struct device *dev = icd->parent; |
b3b5020d GL |
1032 | struct soc_camera_host *ici = to_soc_camera_host(dev); |
1033 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
8be65dc5 | 1034 | int ret, k, n; |
9414de39 | 1035 | int formats = 0; |
904078f1 | 1036 | struct sh_mobile_ceu_cam *cam; |
760697be GL |
1037 | enum v4l2_mbus_pixelcode code; |
1038 | const struct soc_mbus_pixelfmt *fmt; | |
9414de39 | 1039 | |
760697be GL |
1040 | ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code); |
1041 | if (ret < 0) | |
1042 | /* No more formats */ | |
1043 | return 0; | |
1044 | ||
1045 | fmt = soc_mbus_get_fmtdesc(code); | |
1046 | if (!fmt) { | |
d2dcad49 GL |
1047 | dev_warn(dev, "unsupported format code #%u: %d\n", idx, code); |
1048 | return 0; | |
760697be GL |
1049 | } |
1050 | ||
6b526fed | 1051 | if (!pcdev->pdata->csi2) { |
e1db7043 | 1052 | /* Are there any restrictions in the CSI-2 case? */ |
b3b5020d GL |
1053 | ret = sh_mobile_ceu_try_bus_param(icd, fmt->bits_per_sample); |
1054 | if (ret < 0) | |
1055 | return 0; | |
1056 | } | |
9414de39 | 1057 | |
904078f1 | 1058 | if (!icd->host_priv) { |
e622681d GL |
1059 | struct v4l2_mbus_framefmt mf; |
1060 | struct v4l2_rect rect; | |
e622681d GL |
1061 | int shift = 0; |
1062 | ||
d34bfcd2 HV |
1063 | /* Add our control */ |
1064 | v4l2_ctrl_new_std(&icd->ctrl_handler, &sh_mobile_ceu_ctrl_ops, | |
1065 | V4L2_CID_SHARPNESS, 0, 1, 1, 0); | |
1066 | if (icd->ctrl_handler.error) | |
1067 | return icd->ctrl_handler.error; | |
1068 | ||
e622681d GL |
1069 | /* FIXME: subwindow is lost between close / open */ |
1070 | ||
1071 | /* Cache current client geometry */ | |
1072 | ret = client_g_rect(sd, &rect); | |
1073 | if (ret < 0) | |
1074 | return ret; | |
1075 | ||
1076 | /* First time */ | |
1077 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); | |
1078 | if (ret < 0) | |
1079 | return ret; | |
1080 | ||
48e971cd GL |
1081 | /* |
1082 | * All currently existing CEU implementations support 2560x1920 | |
1083 | * or larger frames. If the sensor is proposing too big a frame, | |
1084 | * don't bother with possibly supportred by the CEU larger | |
1085 | * sizes, just try VGA multiples. If needed, this can be | |
1086 | * adjusted in the future. | |
1087 | */ | |
1088 | while ((mf.width > pcdev->max_width || | |
1089 | mf.height > pcdev->max_height) && shift < 4) { | |
e622681d GL |
1090 | /* Try 2560x1920, 1280x960, 640x480, 320x240 */ |
1091 | mf.width = 2560 >> shift; | |
1092 | mf.height = 1920 >> shift; | |
4c0b036d GL |
1093 | ret = v4l2_device_call_until_err(sd->v4l2_dev, |
1094 | soc_camera_grp_id(icd), video, | |
1095 | s_mbus_fmt, &mf); | |
e622681d GL |
1096 | if (ret < 0) |
1097 | return ret; | |
1098 | shift++; | |
1099 | } | |
1100 | ||
1101 | if (shift == 4) { | |
1102 | dev_err(dev, "Failed to configure the client below %ux%x\n", | |
1103 | mf.width, mf.height); | |
1104 | return -EIO; | |
1105 | } | |
1106 | ||
1107 | dev_geo(dev, "camera fmt %ux%u\n", mf.width, mf.height); | |
1108 | ||
904078f1 GL |
1109 | cam = kzalloc(sizeof(*cam), GFP_KERNEL); |
1110 | if (!cam) | |
1111 | return -ENOMEM; | |
1112 | ||
e622681d GL |
1113 | /* We are called with current camera crop, initialise subrect with it */ |
1114 | cam->rect = rect; | |
1115 | cam->subrect = rect; | |
1116 | ||
1117 | cam->width = mf.width; | |
1118 | cam->height = mf.height; | |
1119 | ||
904078f1 GL |
1120 | icd->host_priv = cam; |
1121 | } else { | |
1122 | cam = icd->host_priv; | |
1123 | } | |
1124 | ||
c8329acc GL |
1125 | /* Beginning of a pass */ |
1126 | if (!idx) | |
904078f1 | 1127 | cam->extra_fmt = NULL; |
c8329acc | 1128 | |
760697be | 1129 | switch (code) { |
ace6e979 GL |
1130 | case V4L2_MBUS_FMT_UYVY8_2X8: |
1131 | case V4L2_MBUS_FMT_VYUY8_2X8: | |
1132 | case V4L2_MBUS_FMT_YUYV8_2X8: | |
1133 | case V4L2_MBUS_FMT_YVYU8_2X8: | |
904078f1 | 1134 | if (cam->extra_fmt) |
760697be | 1135 | break; |
c8329acc GL |
1136 | |
1137 | /* | |
1138 | * Our case is simple so far: for any of the above four camera | |
1139 | * formats we add all our four synthesized NV* formats, so, | |
1140 | * just marking the device with a single flag suffices. If | |
1141 | * the format generation rules are more complex, you would have | |
1142 | * to actually hang your already added / counted formats onto | |
1143 | * the host_priv pointer and check whether the format you're | |
1144 | * going to add now is already there. | |
1145 | */ | |
760697be | 1146 | cam->extra_fmt = sh_mobile_ceu_formats; |
c8329acc | 1147 | |
8be65dc5 MD |
1148 | n = ARRAY_SIZE(sh_mobile_ceu_formats); |
1149 | formats += n; | |
1150 | for (k = 0; xlate && k < n; k++) { | |
760697be GL |
1151 | xlate->host_fmt = &sh_mobile_ceu_formats[k]; |
1152 | xlate->code = code; | |
8be65dc5 | 1153 | xlate++; |
760697be GL |
1154 | dev_dbg(dev, "Providing format %s using code %d\n", |
1155 | sh_mobile_ceu_formats[k].name, code); | |
8be65dc5 | 1156 | } |
760697be | 1157 | break; |
9414de39 | 1158 | default: |
760697be GL |
1159 | if (!sh_mobile_ceu_packing_supported(fmt)) |
1160 | return 0; | |
1161 | } | |
1162 | ||
1163 | /* Generic pass-through */ | |
1164 | formats++; | |
1165 | if (xlate) { | |
1166 | xlate->host_fmt = fmt; | |
1167 | xlate->code = code; | |
1168 | xlate++; | |
1169 | dev_dbg(dev, "Providing format %s in pass-through mode\n", | |
e53a4805 | 1170 | fmt->name); |
9414de39 MD |
1171 | } |
1172 | ||
1173 | return formats; | |
1174 | } | |
1175 | ||
904078f1 GL |
1176 | static void sh_mobile_ceu_put_formats(struct soc_camera_device *icd) |
1177 | { | |
1178 | kfree(icd->host_priv); | |
1179 | icd->host_priv = NULL; | |
1180 | } | |
1181 | ||
961801bb | 1182 | /* Check if any dimension of r1 is smaller than respective one of r2 */ |
904078f1 GL |
1183 | static bool is_smaller(struct v4l2_rect *r1, struct v4l2_rect *r2) |
1184 | { | |
1185 | return r1->width < r2->width || r1->height < r2->height; | |
1186 | } | |
1187 | ||
961801bb GL |
1188 | /* Check if r1 fails to cover r2 */ |
1189 | static bool is_inside(struct v4l2_rect *r1, struct v4l2_rect *r2) | |
1190 | { | |
1191 | return r1->left > r2->left || r1->top > r2->top || | |
1192 | r1->left + r1->width < r2->left + r2->width || | |
1193 | r1->top + r1->height < r2->top + r2->height; | |
1194 | } | |
1195 | ||
6a6c8786 GL |
1196 | static unsigned int scale_down(unsigned int size, unsigned int scale) |
1197 | { | |
1198 | return (size * 4096 + scale / 2) / scale; | |
1199 | } | |
1200 | ||
6a6c8786 GL |
1201 | static unsigned int calc_generic_scale(unsigned int input, unsigned int output) |
1202 | { | |
1203 | return (input * 4096 + output / 2) / output; | |
1204 | } | |
1205 | ||
e622681d | 1206 | /* Get and store current client crop */ |
6a6c8786 GL |
1207 | static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect) |
1208 | { | |
1209 | struct v4l2_crop crop; | |
1210 | struct v4l2_cropcap cap; | |
1211 | int ret; | |
1212 | ||
1213 | crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1214 | ||
1215 | ret = v4l2_subdev_call(sd, video, g_crop, &crop); | |
1216 | if (!ret) { | |
1217 | *rect = crop.c; | |
1218 | return ret; | |
1219 | } | |
1220 | ||
1221 | /* Camera driver doesn't support .g_crop(), assume default rectangle */ | |
1222 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1223 | ||
1224 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
e622681d GL |
1225 | if (!ret) |
1226 | *rect = cap.defrect; | |
6a6c8786 GL |
1227 | |
1228 | return ret; | |
1229 | } | |
1230 | ||
e622681d GL |
1231 | /* Client crop has changed, update our sub-rectangle to remain within the area */ |
1232 | static void update_subrect(struct sh_mobile_ceu_cam *cam) | |
1233 | { | |
1234 | struct v4l2_rect *rect = &cam->rect, *subrect = &cam->subrect; | |
1235 | ||
1236 | if (rect->width < subrect->width) | |
1237 | subrect->width = rect->width; | |
1238 | ||
1239 | if (rect->height < subrect->height) | |
1240 | subrect->height = rect->height; | |
1241 | ||
1242 | if (rect->left > subrect->left) | |
1243 | subrect->left = rect->left; | |
1244 | else if (rect->left + rect->width > | |
1245 | subrect->left + subrect->width) | |
1246 | subrect->left = rect->left + rect->width - | |
1247 | subrect->width; | |
1248 | ||
1249 | if (rect->top > subrect->top) | |
1250 | subrect->top = rect->top; | |
1251 | else if (rect->top + rect->height > | |
1252 | subrect->top + subrect->height) | |
1253 | subrect->top = rect->top + rect->height - | |
1254 | subrect->height; | |
1255 | } | |
1256 | ||
961801bb | 1257 | /* |
6a6c8786 | 1258 | * The common for both scaling and cropping iterative approach is: |
961801bb GL |
1259 | * 1. try if the client can produce exactly what requested by the user |
1260 | * 2. if (1) failed, try to double the client image until we get one big enough | |
1261 | * 3. if (2) failed, try to request the maximum image | |
1262 | */ | |
e622681d | 1263 | static int client_s_crop(struct soc_camera_device *icd, struct v4l2_crop *crop, |
6a6c8786 | 1264 | struct v4l2_crop *cam_crop) |
09e231b3 | 1265 | { |
e622681d | 1266 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
6a6c8786 GL |
1267 | struct v4l2_rect *rect = &crop->c, *cam_rect = &cam_crop->c; |
1268 | struct device *dev = sd->v4l2_dev->dev; | |
e622681d | 1269 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
6a6c8786 | 1270 | struct v4l2_cropcap cap; |
904078f1 | 1271 | int ret; |
6a6c8786 | 1272 | unsigned int width, height; |
904078f1 | 1273 | |
6a6c8786 GL |
1274 | v4l2_subdev_call(sd, video, s_crop, crop); |
1275 | ret = client_g_rect(sd, cam_rect); | |
1276 | if (ret < 0) | |
1277 | return ret; | |
961801bb | 1278 | |
6a6c8786 GL |
1279 | /* |
1280 | * Now cam_crop contains the current camera input rectangle, and it must | |
1281 | * be within camera cropcap bounds | |
1282 | */ | |
1283 | if (!memcmp(rect, cam_rect, sizeof(*rect))) { | |
1284 | /* Even if camera S_CROP failed, but camera rectangle matches */ | |
e26b3144 | 1285 | dev_dbg(dev, "Camera S_CROP successful for %dx%d@%d:%d\n", |
6a6c8786 | 1286 | rect->width, rect->height, rect->left, rect->top); |
e622681d | 1287 | cam->rect = *cam_rect; |
6a6c8786 | 1288 | return 0; |
904078f1 GL |
1289 | } |
1290 | ||
6a6c8786 | 1291 | /* Try to fix cropping, that camera hasn't managed to set */ |
e26b3144 | 1292 | dev_geo(dev, "Fix camera S_CROP for %dx%d@%d:%d to %dx%d@%d:%d\n", |
6a6c8786 | 1293 | cam_rect->width, cam_rect->height, |
08590b96 | 1294 | cam_rect->left, cam_rect->top, |
6a6c8786 GL |
1295 | rect->width, rect->height, rect->left, rect->top); |
1296 | ||
1297 | /* We need sensor maximum rectangle */ | |
1298 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
1299 | if (ret < 0) | |
1300 | return ret; | |
1301 | ||
e622681d | 1302 | /* Put user requested rectangle within sensor bounds */ |
6a6c8786 GL |
1303 | soc_camera_limit_side(&rect->left, &rect->width, cap.bounds.left, 2, |
1304 | cap.bounds.width); | |
1305 | soc_camera_limit_side(&rect->top, &rect->height, cap.bounds.top, 4, | |
1306 | cap.bounds.height); | |
904078f1 GL |
1307 | |
1308 | /* | |
1309 | * Popular special case - some cameras can only handle fixed sizes like | |
1310 | * QVGA, VGA,... Take care to avoid infinite loop. | |
1311 | */ | |
6a6c8786 GL |
1312 | width = max(cam_rect->width, 2); |
1313 | height = max(cam_rect->height, 2); | |
1314 | ||
e622681d GL |
1315 | /* |
1316 | * Loop as long as sensor is not covering the requested rectangle and | |
1317 | * is still within its bounds | |
1318 | */ | |
6a6c8786 GL |
1319 | while (!ret && (is_smaller(cam_rect, rect) || |
1320 | is_inside(cam_rect, rect)) && | |
1321 | (cap.bounds.width > width || cap.bounds.height > height)) { | |
961801bb GL |
1322 | |
1323 | width *= 2; | |
1324 | height *= 2; | |
6a6c8786 | 1325 | |
08590b96 GL |
1326 | cam_rect->width = width; |
1327 | cam_rect->height = height; | |
904078f1 | 1328 | |
6a6c8786 GL |
1329 | /* |
1330 | * We do not know what capabilities the camera has to set up | |
1331 | * left and top borders. We could try to be smarter in iterating | |
1332 | * them, e.g., if camera current left is to the right of the | |
1333 | * target left, set it to the middle point between the current | |
1334 | * left and minimum left. But that would add too much | |
1335 | * complexity: we would have to iterate each border separately. | |
e622681d | 1336 | * Instead we just drop to the left and top bounds. |
6a6c8786 GL |
1337 | */ |
1338 | if (cam_rect->left > rect->left) | |
1339 | cam_rect->left = cap.bounds.left; | |
961801bb | 1340 | |
6a6c8786 GL |
1341 | if (cam_rect->left + cam_rect->width < rect->left + rect->width) |
1342 | cam_rect->width = rect->left + rect->width - | |
08590b96 | 1343 | cam_rect->left; |
961801bb | 1344 | |
6a6c8786 GL |
1345 | if (cam_rect->top > rect->top) |
1346 | cam_rect->top = cap.bounds.top; | |
961801bb | 1347 | |
6a6c8786 GL |
1348 | if (cam_rect->top + cam_rect->height < rect->top + rect->height) |
1349 | cam_rect->height = rect->top + rect->height - | |
08590b96 | 1350 | cam_rect->top; |
961801bb | 1351 | |
6a6c8786 GL |
1352 | v4l2_subdev_call(sd, video, s_crop, cam_crop); |
1353 | ret = client_g_rect(sd, cam_rect); | |
e26b3144 | 1354 | dev_geo(dev, "Camera S_CROP %d for %dx%d@%d:%d\n", ret, |
6a6c8786 | 1355 | cam_rect->width, cam_rect->height, |
08590b96 | 1356 | cam_rect->left, cam_rect->top); |
904078f1 GL |
1357 | } |
1358 | ||
6a6c8786 GL |
1359 | /* S_CROP must not modify the rectangle */ |
1360 | if (is_smaller(cam_rect, rect) || is_inside(cam_rect, rect)) { | |
904078f1 GL |
1361 | /* |
1362 | * The camera failed to configure a suitable cropping, | |
1363 | * we cannot use the current rectangle, set to max | |
1364 | */ | |
6a6c8786 GL |
1365 | *cam_rect = cap.bounds; |
1366 | v4l2_subdev_call(sd, video, s_crop, cam_crop); | |
1367 | ret = client_g_rect(sd, cam_rect); | |
e26b3144 | 1368 | dev_geo(dev, "Camera S_CROP %d for max %dx%d@%d:%d\n", ret, |
6a6c8786 | 1369 | cam_rect->width, cam_rect->height, |
08590b96 | 1370 | cam_rect->left, cam_rect->top); |
904078f1 GL |
1371 | } |
1372 | ||
e622681d GL |
1373 | if (!ret) { |
1374 | cam->rect = *cam_rect; | |
1375 | update_subrect(cam); | |
6a6c8786 GL |
1376 | } |
1377 | ||
e622681d | 1378 | return ret; |
6a6c8786 GL |
1379 | } |
1380 | ||
e622681d | 1381 | /* Iterative s_mbus_fmt, also updates cached client crop on success */ |
760697be GL |
1382 | static int client_s_fmt(struct soc_camera_device *icd, |
1383 | struct v4l2_mbus_framefmt *mf, bool ceu_can_scale) | |
6a6c8786 | 1384 | { |
48e971cd GL |
1385 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
1386 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
e622681d | 1387 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
6a6c8786 | 1388 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
7dfff953 | 1389 | struct device *dev = icd->parent; |
760697be | 1390 | unsigned int width = mf->width, height = mf->height, tmp_w, tmp_h; |
6a6c8786 GL |
1391 | unsigned int max_width, max_height; |
1392 | struct v4l2_cropcap cap; | |
36988741 | 1393 | bool ceu_1to1; |
6a6c8786 GL |
1394 | int ret; |
1395 | ||
4c0b036d GL |
1396 | ret = v4l2_device_call_until_err(sd->v4l2_dev, |
1397 | soc_camera_grp_id(icd), video, | |
b3b5020d | 1398 | s_mbus_fmt, mf); |
e622681d GL |
1399 | if (ret < 0) |
1400 | return ret; | |
1401 | ||
1402 | dev_geo(dev, "camera scaled to %ux%u\n", mf->width, mf->height); | |
1403 | ||
36988741 GL |
1404 | if (width == mf->width && height == mf->height) { |
1405 | /* Perfect! The client has done it all. */ | |
1406 | ceu_1to1 = true; | |
1407 | goto update_cache; | |
1408 | } | |
1409 | ||
1410 | ceu_1to1 = false; | |
1411 | if (!ceu_can_scale) | |
e622681d GL |
1412 | goto update_cache; |
1413 | ||
6a6c8786 GL |
1414 | cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
1415 | ||
1416 | ret = v4l2_subdev_call(sd, video, cropcap, &cap); | |
1417 | if (ret < 0) | |
1418 | return ret; | |
1419 | ||
48e971cd GL |
1420 | max_width = min(cap.bounds.width, pcdev->max_width); |
1421 | max_height = min(cap.bounds.height, pcdev->max_height); | |
6a6c8786 | 1422 | |
6a6c8786 | 1423 | /* Camera set a format, but geometry is not precise, try to improve */ |
760697be GL |
1424 | tmp_w = mf->width; |
1425 | tmp_h = mf->height; | |
6a6c8786 GL |
1426 | |
1427 | /* width <= max_width && height <= max_height - guaranteed by try_fmt */ | |
1428 | while ((width > tmp_w || height > tmp_h) && | |
1429 | tmp_w < max_width && tmp_h < max_height) { | |
1430 | tmp_w = min(2 * tmp_w, max_width); | |
1431 | tmp_h = min(2 * tmp_h, max_height); | |
760697be GL |
1432 | mf->width = tmp_w; |
1433 | mf->height = tmp_h; | |
4c0b036d GL |
1434 | ret = v4l2_device_call_until_err(sd->v4l2_dev, |
1435 | soc_camera_grp_id(icd), video, | |
1436 | s_mbus_fmt, mf); | |
6a6c8786 | 1437 | dev_geo(dev, "Camera scaled to %ux%u\n", |
760697be | 1438 | mf->width, mf->height); |
6a6c8786 GL |
1439 | if (ret < 0) { |
1440 | /* This shouldn't happen */ | |
1441 | dev_err(dev, "Client failed to set format: %d\n", ret); | |
1442 | return ret; | |
1443 | } | |
1444 | } | |
1445 | ||
e622681d GL |
1446 | update_cache: |
1447 | /* Update cache */ | |
1448 | ret = client_g_rect(sd, &cam->rect); | |
1449 | if (ret < 0) | |
1450 | return ret; | |
1451 | ||
36988741 GL |
1452 | if (ceu_1to1) |
1453 | cam->subrect = cam->rect; | |
1454 | else | |
1455 | update_subrect(cam); | |
e622681d | 1456 | |
6a6c8786 GL |
1457 | return 0; |
1458 | } | |
1459 | ||
1460 | /** | |
e622681d GL |
1461 | * @width - on output: user width, mapped back to input |
1462 | * @height - on output: user height, mapped back to input | |
1463 | * @mf - in- / output camera output window | |
6a6c8786 | 1464 | */ |
e622681d GL |
1465 | static int client_scale(struct soc_camera_device *icd, |
1466 | struct v4l2_mbus_framefmt *mf, | |
1467 | unsigned int *width, unsigned int *height, | |
1468 | bool ceu_can_scale) | |
6a6c8786 | 1469 | { |
6a6c8786 | 1470 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
7dfff953 | 1471 | struct device *dev = icd->parent; |
760697be | 1472 | struct v4l2_mbus_framefmt mf_tmp = *mf; |
6a6c8786 GL |
1473 | unsigned int scale_h, scale_v; |
1474 | int ret; | |
1475 | ||
e622681d GL |
1476 | /* |
1477 | * 5. Apply iterative camera S_FMT for camera user window (also updates | |
1478 | * client crop cache and the imaginary sub-rectangle). | |
1479 | */ | |
760697be | 1480 | ret = client_s_fmt(icd, &mf_tmp, ceu_can_scale); |
6a6c8786 GL |
1481 | if (ret < 0) |
1482 | return ret; | |
1483 | ||
1484 | dev_geo(dev, "5: camera scaled to %ux%u\n", | |
760697be | 1485 | mf_tmp.width, mf_tmp.height); |
6a6c8786 GL |
1486 | |
1487 | /* 6. Retrieve camera output window (g_fmt) */ | |
1488 | ||
760697be | 1489 | /* unneeded - it is already in "mf_tmp" */ |
6a6c8786 | 1490 | |
e622681d GL |
1491 | /* 7. Calculate new client scales. */ |
1492 | scale_h = calc_generic_scale(cam->rect.width, mf_tmp.width); | |
1493 | scale_v = calc_generic_scale(cam->rect.height, mf_tmp.height); | |
6a6c8786 | 1494 | |
760697be GL |
1495 | mf->width = mf_tmp.width; |
1496 | mf->height = mf_tmp.height; | |
1497 | mf->colorspace = mf_tmp.colorspace; | |
904078f1 GL |
1498 | |
1499 | /* | |
6a6c8786 | 1500 | * 8. Calculate new CEU crop - apply camera scales to previously |
e622681d | 1501 | * updated "effective" crop. |
904078f1 | 1502 | */ |
e622681d GL |
1503 | *width = scale_down(cam->subrect.width, scale_h); |
1504 | *height = scale_down(cam->subrect.height, scale_v); | |
6a6c8786 | 1505 | |
e622681d | 1506 | dev_geo(dev, "8: new client sub-window %ux%u\n", *width, *height); |
6a6c8786 GL |
1507 | |
1508 | return 0; | |
1509 | } | |
1510 | ||
1511 | /* | |
1512 | * CEU can scale and crop, but we don't want to waste bandwidth and kill the | |
1513 | * framerate by always requesting the maximum image from the client. See | |
3dac322d | 1514 | * Documentation/video4linux/sh_mobile_ceu_camera.txt for a description of |
6a6c8786 GL |
1515 | * scaling and cropping algorithms and for the meaning of referenced here steps. |
1516 | */ | |
1517 | static int sh_mobile_ceu_set_crop(struct soc_camera_device *icd, | |
1518 | struct v4l2_crop *a) | |
1519 | { | |
1520 | struct v4l2_rect *rect = &a->c; | |
7dfff953 GL |
1521 | struct device *dev = icd->parent; |
1522 | struct soc_camera_host *ici = to_soc_camera_host(dev); | |
6a6c8786 GL |
1523 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
1524 | struct v4l2_crop cam_crop; | |
1525 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
e622681d | 1526 | struct v4l2_rect *cam_rect = &cam_crop.c; |
6a6c8786 | 1527 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
760697be | 1528 | struct v4l2_mbus_framefmt mf; |
e622681d | 1529 | unsigned int scale_cam_h, scale_cam_v, scale_ceu_h, scale_ceu_v, |
787d0f9d | 1530 | out_width, out_height; |
e622681d | 1531 | int interm_width, interm_height; |
6a6c8786 GL |
1532 | u32 capsr, cflcr; |
1533 | int ret; | |
1534 | ||
e622681d GL |
1535 | dev_geo(dev, "S_CROP(%ux%u@%u:%u)\n", rect->width, rect->height, |
1536 | rect->left, rect->top); | |
6a6c8786 | 1537 | |
e622681d GL |
1538 | /* During camera cropping its output window can change too, stop CEU */ |
1539 | capsr = capture_save_reset(pcdev); | |
1540 | dev_dbg(dev, "CAPSR 0x%x, CFLCR 0x%x\n", capsr, pcdev->cflcr); | |
6a6c8786 | 1541 | |
eec5ce01 GL |
1542 | /* |
1543 | * 1. - 2. Apply iterative camera S_CROP for new input window, read back | |
1544 | * actual camera rectangle. | |
1545 | */ | |
e622681d | 1546 | ret = client_s_crop(icd, a, &cam_crop); |
6a6c8786 GL |
1547 | if (ret < 0) |
1548 | return ret; | |
1549 | ||
e622681d | 1550 | dev_geo(dev, "1-2: camera cropped to %ux%u@%u:%u\n", |
6a6c8786 GL |
1551 | cam_rect->width, cam_rect->height, |
1552 | cam_rect->left, cam_rect->top); | |
1553 | ||
1554 | /* On success cam_crop contains current camera crop */ | |
1555 | ||
e622681d GL |
1556 | /* 3. Retrieve camera output window */ |
1557 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); | |
1558 | if (ret < 0) | |
1559 | return ret; | |
6a6c8786 | 1560 | |
48e971cd | 1561 | if (mf.width > pcdev->max_width || mf.height > pcdev->max_height) |
e622681d | 1562 | return -EINVAL; |
6a6c8786 | 1563 | |
e622681d GL |
1564 | /* 4. Calculate camera scales */ |
1565 | scale_cam_h = calc_generic_scale(cam_rect->width, mf.width); | |
1566 | scale_cam_v = calc_generic_scale(cam_rect->height, mf.height); | |
6a6c8786 | 1567 | |
e622681d GL |
1568 | /* Calculate intermediate window */ |
1569 | interm_width = scale_down(rect->width, scale_cam_h); | |
1570 | interm_height = scale_down(rect->height, scale_cam_v); | |
6a6c8786 | 1571 | |
3dac322d GL |
1572 | if (interm_width < icd->user_width) { |
1573 | u32 new_scale_h; | |
1574 | ||
1575 | new_scale_h = calc_generic_scale(rect->width, icd->user_width); | |
1576 | ||
1577 | mf.width = scale_down(cam_rect->width, new_scale_h); | |
1578 | } | |
1579 | ||
1580 | if (interm_height < icd->user_height) { | |
1581 | u32 new_scale_v; | |
1582 | ||
1583 | new_scale_v = calc_generic_scale(rect->height, icd->user_height); | |
1584 | ||
1585 | mf.height = scale_down(cam_rect->height, new_scale_v); | |
1586 | } | |
1587 | ||
1588 | if (interm_width < icd->user_width || interm_height < icd->user_height) { | |
4c0b036d GL |
1589 | ret = v4l2_device_call_until_err(sd->v4l2_dev, |
1590 | soc_camera_grp_id(icd), video, | |
1591 | s_mbus_fmt, &mf); | |
3dac322d GL |
1592 | if (ret < 0) |
1593 | return ret; | |
1594 | ||
1595 | dev_geo(dev, "New camera output %ux%u\n", mf.width, mf.height); | |
1596 | scale_cam_h = calc_generic_scale(cam_rect->width, mf.width); | |
1597 | scale_cam_v = calc_generic_scale(cam_rect->height, mf.height); | |
1598 | interm_width = scale_down(rect->width, scale_cam_h); | |
1599 | interm_height = scale_down(rect->height, scale_cam_v); | |
1600 | } | |
1601 | ||
1602 | /* Cache camera output window */ | |
1603 | cam->width = mf.width; | |
1604 | cam->height = mf.height; | |
1605 | ||
e622681d GL |
1606 | if (pcdev->image_mode) { |
1607 | out_width = min(interm_width, icd->user_width); | |
1608 | out_height = min(interm_height, icd->user_height); | |
1609 | } else { | |
1610 | out_width = interm_width; | |
1611 | out_height = interm_height; | |
1612 | } | |
6a6c8786 GL |
1613 | |
1614 | /* | |
e622681d GL |
1615 | * 5. Calculate CEU scales from camera scales from results of (5) and |
1616 | * the user window | |
6a6c8786 | 1617 | */ |
e622681d GL |
1618 | scale_ceu_h = calc_scale(interm_width, &out_width); |
1619 | scale_ceu_v = calc_scale(interm_height, &out_height); | |
6a6c8786 | 1620 | |
e622681d GL |
1621 | dev_geo(dev, "5: CEU scales %u:%u\n", scale_ceu_h, scale_ceu_v); |
1622 | ||
1623 | /* Apply CEU scales. */ | |
6a6c8786 GL |
1624 | cflcr = scale_ceu_h | (scale_ceu_v << 16); |
1625 | if (cflcr != pcdev->cflcr) { | |
1626 | pcdev->cflcr = cflcr; | |
1627 | ceu_write(pcdev, CFLCR, cflcr); | |
1628 | } | |
1629 | ||
eec5ce01 GL |
1630 | icd->user_width = out_width & ~3; |
1631 | icd->user_height = out_height & ~3; | |
1632 | /* Offsets are applied at the CEU scaling filter input */ | |
787d0f9d GL |
1633 | cam->ceu_left = scale_down(rect->left - cam_rect->left, scale_cam_h) & ~1; |
1634 | cam->ceu_top = scale_down(rect->top - cam_rect->top, scale_cam_v) & ~1; | |
e622681d GL |
1635 | |
1636 | /* 6. Use CEU cropping to crop to the new window. */ | |
1637 | sh_mobile_ceu_set_rect(icd); | |
1638 | ||
1639 | cam->subrect = *rect; | |
1640 | ||
1641 | dev_geo(dev, "6: CEU cropped to %ux%u@%u:%u\n", | |
1642 | icd->user_width, icd->user_height, | |
1643 | cam->ceu_left, cam->ceu_top); | |
1644 | ||
787d0f9d | 1645 | /* Restore capture. The CE bit can be cleared by the hardware */ |
904078f1 GL |
1646 | if (pcdev->active) |
1647 | capsr |= 1; | |
904078f1 GL |
1648 | capture_restore(pcdev, capsr); |
1649 | ||
904078f1 GL |
1650 | /* Even if only camera cropping succeeded */ |
1651 | return ret; | |
09e231b3 GL |
1652 | } |
1653 | ||
e622681d GL |
1654 | static int sh_mobile_ceu_get_crop(struct soc_camera_device *icd, |
1655 | struct v4l2_crop *a) | |
1656 | { | |
1657 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
1658 | ||
1659 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1660 | a->c = cam->subrect; | |
1661 | ||
1662 | return 0; | |
1663 | } | |
1664 | ||
1665 | /* | |
1666 | * Calculate real client output window by applying new scales to the current | |
1667 | * client crop. New scales are calculated from the requested output format and | |
1668 | * CEU crop, mapped backed onto the client input (subrect). | |
1669 | */ | |
1670 | static void calculate_client_output(struct soc_camera_device *icd, | |
eec5ce01 | 1671 | const struct v4l2_pix_format *pix, struct v4l2_mbus_framefmt *mf) |
e622681d GL |
1672 | { |
1673 | struct sh_mobile_ceu_cam *cam = icd->host_priv; | |
7dfff953 | 1674 | struct device *dev = icd->parent; |
e622681d GL |
1675 | struct v4l2_rect *cam_subrect = &cam->subrect; |
1676 | unsigned int scale_v, scale_h; | |
1677 | ||
1678 | if (cam_subrect->width == cam->rect.width && | |
1679 | cam_subrect->height == cam->rect.height) { | |
1680 | /* No sub-cropping */ | |
1681 | mf->width = pix->width; | |
1682 | mf->height = pix->height; | |
1683 | return; | |
1684 | } | |
1685 | ||
1686 | /* 1.-2. Current camera scales and subwin - cached. */ | |
1687 | ||
1688 | dev_geo(dev, "2: subwin %ux%u@%u:%u\n", | |
1689 | cam_subrect->width, cam_subrect->height, | |
1690 | cam_subrect->left, cam_subrect->top); | |
1691 | ||
1692 | /* | |
1693 | * 3. Calculate new combined scales from input sub-window to requested | |
1694 | * user window. | |
1695 | */ | |
1696 | ||
1697 | /* | |
1698 | * TODO: CEU cannot scale images larger than VGA to smaller than SubQCIF | |
1699 | * (128x96) or larger than VGA | |
1700 | */ | |
1701 | scale_h = calc_generic_scale(cam_subrect->width, pix->width); | |
1702 | scale_v = calc_generic_scale(cam_subrect->height, pix->height); | |
1703 | ||
1704 | dev_geo(dev, "3: scales %u:%u\n", scale_h, scale_v); | |
1705 | ||
1706 | /* | |
36988741 GL |
1707 | * 4. Calculate desired client output window by applying combined scales |
1708 | * to client (real) input window. | |
e622681d GL |
1709 | */ |
1710 | mf->width = scale_down(cam->rect.width, scale_h); | |
1711 | mf->height = scale_down(cam->rect.height, scale_v); | |
1712 | } | |
1713 | ||
961801bb | 1714 | /* Similar to set_crop multistage iterative algorithm */ |
d8fac217 | 1715 | static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, |
09e231b3 | 1716 | struct v4l2_format *f) |
0d3244d6 | 1717 | { |
7dfff953 GL |
1718 | struct device *dev = icd->parent; |
1719 | struct soc_camera_host *ici = to_soc_camera_host(dev); | |
961801bb | 1720 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
904078f1 GL |
1721 | struct sh_mobile_ceu_cam *cam = icd->host_priv; |
1722 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
760697be | 1723 | struct v4l2_mbus_framefmt mf; |
904078f1 | 1724 | __u32 pixfmt = pix->pixelformat; |
9414de39 | 1725 | const struct soc_camera_format_xlate *xlate; |
b3b5020d GL |
1726 | /* Keep Compiler Happy */ |
1727 | unsigned int ceu_sub_width = 0, ceu_sub_height = 0; | |
6a6c8786 GL |
1728 | u16 scale_v, scale_h; |
1729 | int ret; | |
1edcc10d KM |
1730 | bool image_mode; |
1731 | enum v4l2_field field; | |
961801bb GL |
1732 | |
1733 | switch (pix->field) { | |
961801bb GL |
1734 | default: |
1735 | pix->field = V4L2_FIELD_NONE; | |
1736 | /* fall-through */ | |
1edcc10d KM |
1737 | case V4L2_FIELD_INTERLACED_TB: |
1738 | case V4L2_FIELD_INTERLACED_BT: | |
961801bb | 1739 | case V4L2_FIELD_NONE: |
1edcc10d KM |
1740 | field = pix->field; |
1741 | break; | |
1742 | case V4L2_FIELD_INTERLACED: | |
1743 | field = V4L2_FIELD_INTERLACED_TB; | |
961801bb GL |
1744 | break; |
1745 | } | |
25c4d74e | 1746 | |
9414de39 MD |
1747 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
1748 | if (!xlate) { | |
6a6c8786 | 1749 | dev_warn(dev, "Format %x not found\n", pixfmt); |
9414de39 | 1750 | return -EINVAL; |
25c4d74e GL |
1751 | } |
1752 | ||
36988741 | 1753 | /* 1.-4. Calculate desired client output geometry */ |
eec5ce01 | 1754 | calculate_client_output(icd, pix, &mf); |
760697be GL |
1755 | mf.field = pix->field; |
1756 | mf.colorspace = pix->colorspace; | |
1757 | mf.code = xlate->code; | |
6a6c8786 | 1758 | |
961801bb GL |
1759 | switch (pixfmt) { |
1760 | case V4L2_PIX_FMT_NV12: | |
1761 | case V4L2_PIX_FMT_NV21: | |
1762 | case V4L2_PIX_FMT_NV16: | |
1763 | case V4L2_PIX_FMT_NV61: | |
6a6c8786 | 1764 | image_mode = true; |
961801bb GL |
1765 | break; |
1766 | default: | |
6a6c8786 | 1767 | image_mode = false; |
9414de39 | 1768 | } |
25c4d74e | 1769 | |
b5518a41 | 1770 | dev_geo(dev, "S_FMT(pix=0x%x, fld 0x%x, code 0x%x, %ux%u)\n", pixfmt, mf.field, mf.code, |
e1db7043 GL |
1771 | pix->width, pix->height); |
1772 | ||
e622681d | 1773 | dev_geo(dev, "4: request camera output %ux%u\n", mf.width, mf.height); |
961801bb | 1774 | |
6a6c8786 | 1775 | /* 5. - 9. */ |
e622681d | 1776 | ret = client_scale(icd, &mf, &ceu_sub_width, &ceu_sub_height, |
1edcc10d | 1777 | image_mode && V4L2_FIELD_NONE == field); |
6a6c8786 | 1778 | |
e622681d | 1779 | dev_geo(dev, "5-9: client scale return %d\n", ret); |
6a6c8786 GL |
1780 | |
1781 | /* Done with the camera. Now see if we can improve the result */ | |
1782 | ||
b3b5020d GL |
1783 | dev_geo(dev, "fmt %ux%u, requested %ux%u\n", |
1784 | mf.width, mf.height, pix->width, pix->height); | |
6a6c8786 GL |
1785 | if (ret < 0) |
1786 | return ret; | |
1787 | ||
760697be GL |
1788 | if (mf.code != xlate->code) |
1789 | return -EINVAL; | |
1790 | ||
e622681d GL |
1791 | /* 9. Prepare CEU crop */ |
1792 | cam->width = mf.width; | |
1793 | cam->height = mf.height; | |
1794 | ||
6a6c8786 | 1795 | /* 10. Use CEU scaling to scale to the requested user window. */ |
961801bb GL |
1796 | |
1797 | /* We cannot scale up */ | |
e622681d GL |
1798 | if (pix->width > ceu_sub_width) |
1799 | ceu_sub_width = pix->width; | |
961801bb | 1800 | |
e622681d GL |
1801 | if (pix->height > ceu_sub_height) |
1802 | ceu_sub_height = pix->height; | |
961801bb | 1803 | |
760697be GL |
1804 | pix->colorspace = mf.colorspace; |
1805 | ||
1806 | if (image_mode) { | |
1807 | /* Scale pix->{width x height} down to width x height */ | |
e622681d GL |
1808 | scale_h = calc_scale(ceu_sub_width, &pix->width); |
1809 | scale_v = calc_scale(ceu_sub_height, &pix->height); | |
760697be | 1810 | } else { |
e622681d GL |
1811 | pix->width = ceu_sub_width; |
1812 | pix->height = ceu_sub_height; | |
1813 | scale_h = 0; | |
1814 | scale_v = 0; | |
760697be | 1815 | } |
961801bb | 1816 | |
e622681d GL |
1817 | pcdev->cflcr = scale_h | (scale_v << 16); |
1818 | ||
1819 | /* | |
1820 | * We have calculated CFLCR, the actual configuration will be performed | |
1821 | * in sh_mobile_ceu_set_bus_param() | |
1822 | */ | |
1823 | ||
6a6c8786 | 1824 | dev_geo(dev, "10: W: %u : 0x%x = %u, H: %u : 0x%x = %u\n", |
e622681d GL |
1825 | ceu_sub_width, scale_h, pix->width, |
1826 | ceu_sub_height, scale_v, pix->height); | |
961801bb | 1827 | |
760697be | 1828 | cam->code = xlate->code; |
760697be | 1829 | icd->current_fmt = xlate; |
961801bb | 1830 | |
1edcc10d | 1831 | pcdev->field = field; |
6a6c8786 | 1832 | pcdev->image_mode = image_mode; |
961801bb | 1833 | |
eec5ce01 GL |
1834 | /* CFSZR requirement */ |
1835 | pix->width &= ~3; | |
1836 | pix->height &= ~3; | |
1837 | ||
961801bb | 1838 | return 0; |
0d3244d6 MD |
1839 | } |
1840 | ||
fc13baff LP |
1841 | #define CEU_CHDW_MAX 8188U /* Maximum line stride */ |
1842 | ||
d8fac217 GL |
1843 | static int sh_mobile_ceu_try_fmt(struct soc_camera_device *icd, |
1844 | struct v4l2_format *f) | |
0d3244d6 | 1845 | { |
48e971cd GL |
1846 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
1847 | struct sh_mobile_ceu_dev *pcdev = ici->priv; | |
9414de39 | 1848 | const struct soc_camera_format_xlate *xlate; |
904078f1 | 1849 | struct v4l2_pix_format *pix = &f->fmt.pix; |
c9c1f1c0 | 1850 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
760697be | 1851 | struct v4l2_mbus_framefmt mf; |
904078f1 | 1852 | __u32 pixfmt = pix->pixelformat; |
961801bb | 1853 | int width, height; |
ccab8a29 | 1854 | int ret; |
a2c8c68c | 1855 | |
7dfff953 | 1856 | dev_geo(icd->parent, "TRY_FMT(pix=0x%x, %ux%u)\n", |
b3b5020d GL |
1857 | pixfmt, pix->width, pix->height); |
1858 | ||
9414de39 MD |
1859 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
1860 | if (!xlate) { | |
fec0f72f GL |
1861 | xlate = icd->current_fmt; |
1862 | dev_dbg(icd->parent, "Format %x not found, keeping %x\n", | |
1863 | pixfmt, xlate->host_fmt->fourcc); | |
1864 | pixfmt = xlate->host_fmt->fourcc; | |
1865 | pix->pixelformat = pixfmt; | |
1866 | pix->colorspace = icd->colorspace; | |
9414de39 | 1867 | } |
25c4d74e | 1868 | |
0d3244d6 MD |
1869 | /* FIXME: calculate using depth and bus width */ |
1870 | ||
eec5ce01 | 1871 | /* CFSZR requires height and width to be 4-pixel aligned */ |
48e971cd GL |
1872 | v4l_bound_align_image(&pix->width, 2, pcdev->max_width, 2, |
1873 | &pix->height, 4, pcdev->max_height, 2, 0); | |
0d3244d6 | 1874 | |
961801bb GL |
1875 | width = pix->width; |
1876 | height = pix->height; | |
1877 | ||
0d3244d6 | 1878 | /* limit to sensor capabilities */ |
760697be GL |
1879 | mf.width = pix->width; |
1880 | mf.height = pix->height; | |
1881 | mf.field = pix->field; | |
1882 | mf.code = xlate->code; | |
1883 | mf.colorspace = pix->colorspace; | |
1884 | ||
4c0b036d GL |
1885 | ret = v4l2_device_call_until_err(sd->v4l2_dev, soc_camera_grp_id(icd), |
1886 | video, try_mbus_fmt, &mf); | |
ccab8a29 KM |
1887 | if (ret < 0) |
1888 | return ret; | |
1889 | ||
760697be GL |
1890 | pix->width = mf.width; |
1891 | pix->height = mf.height; | |
1892 | pix->field = mf.field; | |
1893 | pix->colorspace = mf.colorspace; | |
1894 | ||
961801bb GL |
1895 | switch (pixfmt) { |
1896 | case V4L2_PIX_FMT_NV12: | |
1897 | case V4L2_PIX_FMT_NV21: | |
1898 | case V4L2_PIX_FMT_NV16: | |
1899 | case V4L2_PIX_FMT_NV61: | |
1900 | /* FIXME: check against rect_max after converting soc-camera */ | |
1901 | /* We can scale precisely, need a bigger image from camera */ | |
1902 | if (pix->width < width || pix->height < height) { | |
760697be GL |
1903 | /* |
1904 | * We presume, the sensor behaves sanely, i.e., if | |
1905 | * requested a bigger rectangle, it will not return a | |
1906 | * smaller one. | |
1907 | */ | |
48e971cd GL |
1908 | mf.width = pcdev->max_width; |
1909 | mf.height = pcdev->max_height; | |
4c0b036d GL |
1910 | ret = v4l2_device_call_until_err(sd->v4l2_dev, |
1911 | soc_camera_grp_id(icd), video, | |
1912 | try_mbus_fmt, &mf); | |
961801bb GL |
1913 | if (ret < 0) { |
1914 | /* Shouldn't actually happen... */ | |
7dfff953 | 1915 | dev_err(icd->parent, |
760697be GL |
1916 | "FIXME: client try_fmt() = %d\n", ret); |
1917 | return ret; | |
961801bb GL |
1918 | } |
1919 | } | |
760697be GL |
1920 | /* We will scale exactly */ |
1921 | if (mf.width > width) | |
961801bb | 1922 | pix->width = width; |
760697be | 1923 | if (mf.height > height) |
961801bb | 1924 | pix->height = height; |
fc13baff LP |
1925 | |
1926 | pix->bytesperline = max(pix->bytesperline, pix->width); | |
1927 | pix->bytesperline = min(pix->bytesperline, CEU_CHDW_MAX); | |
1928 | pix->bytesperline &= ~3; | |
1929 | break; | |
1930 | ||
1931 | default: | |
1932 | /* Configurable stride isn't supported in pass-through mode. */ | |
1933 | pix->bytesperline = 0; | |
ccab8a29 KM |
1934 | } |
1935 | ||
eec5ce01 GL |
1936 | pix->width &= ~3; |
1937 | pix->height &= ~3; | |
fc13baff | 1938 | pix->sizeimage = 0; |
eec5ce01 | 1939 | |
7dfff953 | 1940 | dev_geo(icd->parent, "%s(): return %d, fmt 0x%x, %ux%u\n", |
b3b5020d GL |
1941 | __func__, ret, pix->pixelformat, pix->width, pix->height); |
1942 | ||
ccab8a29 | 1943 | return ret; |
0d3244d6 MD |
1944 | } |
1945 | ||
3dac322d GL |
1946 | static int sh_mobile_ceu_set_livecrop(struct soc_camera_device *icd, |
1947 | struct v4l2_crop *a) | |
1948 | { | |
1949 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); | |
7dfff953 | 1950 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
3dac322d GL |
1951 | struct sh_mobile_ceu_dev *pcdev = ici->priv; |
1952 | u32 out_width = icd->user_width, out_height = icd->user_height; | |
1953 | int ret; | |
1954 | ||
1955 | /* Freeze queue */ | |
1956 | pcdev->frozen = 1; | |
1957 | /* Wait for frame */ | |
1958 | ret = wait_for_completion_interruptible(&pcdev->complete); | |
1959 | /* Stop the client */ | |
1960 | ret = v4l2_subdev_call(sd, video, s_stream, 0); | |
1961 | if (ret < 0) | |
7dfff953 | 1962 | dev_warn(icd->parent, |
3dac322d GL |
1963 | "Client failed to stop the stream: %d\n", ret); |
1964 | else | |
1965 | /* Do the crop, if it fails, there's nothing more we can do */ | |
1966 | sh_mobile_ceu_set_crop(icd, a); | |
1967 | ||
7dfff953 | 1968 | dev_geo(icd->parent, "Output after crop: %ux%u\n", icd->user_width, icd->user_height); |
3dac322d GL |
1969 | |
1970 | if (icd->user_width != out_width || icd->user_height != out_height) { | |
1971 | struct v4l2_format f = { | |
1972 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, | |
1973 | .fmt.pix = { | |
1974 | .width = out_width, | |
1975 | .height = out_height, | |
1976 | .pixelformat = icd->current_fmt->host_fmt->fourcc, | |
1977 | .field = pcdev->field, | |
1978 | .colorspace = icd->colorspace, | |
1979 | }, | |
1980 | }; | |
1981 | ret = sh_mobile_ceu_set_fmt(icd, &f); | |
1982 | if (!ret && (out_width != f.fmt.pix.width || | |
1983 | out_height != f.fmt.pix.height)) | |
1984 | ret = -EINVAL; | |
1985 | if (!ret) { | |
eec5ce01 GL |
1986 | icd->user_width = out_width & ~3; |
1987 | icd->user_height = out_height & ~3; | |
8843d119 | 1988 | ret = sh_mobile_ceu_set_bus_param(icd); |
3dac322d GL |
1989 | } |
1990 | } | |
1991 | ||
1992 | /* Thaw the queue */ | |
1993 | pcdev->frozen = 0; | |
1994 | spin_lock_irq(&pcdev->lock); | |
1995 | sh_mobile_ceu_capture(pcdev); | |
1996 | spin_unlock_irq(&pcdev->lock); | |
1997 | /* Start the client */ | |
1998 | ret = v4l2_subdev_call(sd, video, s_stream, 1); | |
1999 | return ret; | |
2000 | } | |
2001 | ||
0d3244d6 MD |
2002 | static unsigned int sh_mobile_ceu_poll(struct file *file, poll_table *pt) |
2003 | { | |
57bee29d | 2004 | struct soc_camera_device *icd = file->private_data; |
0d3244d6 | 2005 | |
a616898d | 2006 | return vb2_poll(&icd->vb2_vidq, file, pt); |
0d3244d6 MD |
2007 | } |
2008 | ||
2009 | static int sh_mobile_ceu_querycap(struct soc_camera_host *ici, | |
2010 | struct v4l2_capability *cap) | |
2011 | { | |
2012 | strlcpy(cap->card, "SuperH_Mobile_CEU", sizeof(cap->card)); | |
0d3244d6 MD |
2013 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
2014 | return 0; | |
2015 | } | |
2016 | ||
a616898d GL |
2017 | static int sh_mobile_ceu_init_videobuf(struct vb2_queue *q, |
2018 | struct soc_camera_device *icd) | |
0d3244d6 | 2019 | { |
a616898d GL |
2020 | q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
2021 | q->io_modes = VB2_MMAP | VB2_USERPTR; | |
2022 | q->drv_priv = icd; | |
2023 | q->ops = &sh_mobile_ceu_videobuf_ops; | |
2024 | q->mem_ops = &vb2_dma_contig_memops; | |
2025 | q->buf_struct_size = sizeof(struct sh_mobile_ceu_buffer); | |
2026 | ||
2027 | return vb2_queue_init(q); | |
0d3244d6 MD |
2028 | } |
2029 | ||
2030 | static struct soc_camera_host_ops sh_mobile_ceu_host_ops = { | |
2031 | .owner = THIS_MODULE, | |
2032 | .add = sh_mobile_ceu_add_device, | |
2033 | .remove = sh_mobile_ceu_remove_device, | |
9414de39 | 2034 | .get_formats = sh_mobile_ceu_get_formats, |
904078f1 | 2035 | .put_formats = sh_mobile_ceu_put_formats, |
e622681d | 2036 | .get_crop = sh_mobile_ceu_get_crop, |
09e231b3 | 2037 | .set_crop = sh_mobile_ceu_set_crop, |
3dac322d | 2038 | .set_livecrop = sh_mobile_ceu_set_livecrop, |
d8fac217 GL |
2039 | .set_fmt = sh_mobile_ceu_set_fmt, |
2040 | .try_fmt = sh_mobile_ceu_try_fmt, | |
0d3244d6 MD |
2041 | .poll = sh_mobile_ceu_poll, |
2042 | .querycap = sh_mobile_ceu_querycap, | |
0d3244d6 | 2043 | .set_bus_param = sh_mobile_ceu_set_bus_param, |
a616898d | 2044 | .init_videobuf2 = sh_mobile_ceu_init_videobuf, |
0d3244d6 MD |
2045 | }; |
2046 | ||
b3b5020d GL |
2047 | struct bus_wait { |
2048 | struct notifier_block notifier; | |
2049 | struct completion completion; | |
2050 | struct device *dev; | |
2051 | }; | |
2052 | ||
2053 | static int bus_notify(struct notifier_block *nb, | |
2054 | unsigned long action, void *data) | |
2055 | { | |
2056 | struct device *dev = data; | |
2057 | struct bus_wait *wait = container_of(nb, struct bus_wait, notifier); | |
2058 | ||
2059 | if (wait->dev != dev) | |
2060 | return NOTIFY_DONE; | |
2061 | ||
2062 | switch (action) { | |
2063 | case BUS_NOTIFY_UNBOUND_DRIVER: | |
2064 | /* Protect from module unloading */ | |
2065 | wait_for_completion(&wait->completion); | |
2066 | return NOTIFY_OK; | |
2067 | } | |
2068 | return NOTIFY_DONE; | |
2069 | } | |
2070 | ||
979ea1dd | 2071 | static int __devinit sh_mobile_ceu_probe(struct platform_device *pdev) |
0d3244d6 MD |
2072 | { |
2073 | struct sh_mobile_ceu_dev *pcdev; | |
2074 | struct resource *res; | |
2075 | void __iomem *base; | |
2076 | unsigned int irq; | |
2077 | int err = 0; | |
b3b5020d GL |
2078 | struct bus_wait wait = { |
2079 | .completion = COMPLETION_INITIALIZER_ONSTACK(wait.completion), | |
2080 | .notifier.notifier_call = bus_notify, | |
2081 | }; | |
6b526fed | 2082 | struct sh_mobile_ceu_companion *csi2; |
0d3244d6 MD |
2083 | |
2084 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
2085 | irq = platform_get_irq(pdev, 0); | |
b89fc2e5 | 2086 | if (!res || (int)irq <= 0) { |
0d3244d6 MD |
2087 | dev_err(&pdev->dev, "Not enough CEU platform resources.\n"); |
2088 | err = -ENODEV; | |
2089 | goto exit; | |
2090 | } | |
2091 | ||
2092 | pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL); | |
2093 | if (!pcdev) { | |
2094 | dev_err(&pdev->dev, "Could not allocate pcdev\n"); | |
2095 | err = -ENOMEM; | |
2096 | goto exit; | |
2097 | } | |
2098 | ||
0d3244d6 MD |
2099 | INIT_LIST_HEAD(&pcdev->capture); |
2100 | spin_lock_init(&pcdev->lock); | |
3dac322d | 2101 | init_completion(&pcdev->complete); |
0d3244d6 MD |
2102 | |
2103 | pcdev->pdata = pdev->dev.platform_data; | |
2104 | if (!pcdev->pdata) { | |
2105 | err = -EINVAL; | |
2106 | dev_err(&pdev->dev, "CEU platform data not set.\n"); | |
2107 | goto exit_kfree; | |
2108 | } | |
2109 | ||
48e971cd GL |
2110 | pcdev->max_width = pcdev->pdata->max_width ? : 2560; |
2111 | pcdev->max_height = pcdev->pdata->max_height ? : 1920; | |
2112 | ||
eb6c8558 | 2113 | base = ioremap_nocache(res->start, resource_size(res)); |
0d3244d6 MD |
2114 | if (!base) { |
2115 | err = -ENXIO; | |
2116 | dev_err(&pdev->dev, "Unable to ioremap CEU registers.\n"); | |
2117 | goto exit_kfree; | |
2118 | } | |
2119 | ||
2120 | pcdev->irq = irq; | |
2121 | pcdev->base = base; | |
2122 | pcdev->video_limit = 0; /* only enabled if second resource exists */ | |
0d3244d6 MD |
2123 | |
2124 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
2125 | if (res) { | |
2126 | err = dma_declare_coherent_memory(&pdev->dev, res->start, | |
2127 | res->start, | |
eb6c8558 | 2128 | resource_size(res), |
0d3244d6 MD |
2129 | DMA_MEMORY_MAP | |
2130 | DMA_MEMORY_EXCLUSIVE); | |
2131 | if (!err) { | |
2132 | dev_err(&pdev->dev, "Unable to declare CEU memory.\n"); | |
2133 | err = -ENXIO; | |
2134 | goto exit_iounmap; | |
2135 | } | |
2136 | ||
eb6c8558 | 2137 | pcdev->video_limit = resource_size(res); |
0d3244d6 MD |
2138 | } |
2139 | ||
2140 | /* request irq */ | |
2141 | err = request_irq(pcdev->irq, sh_mobile_ceu_irq, IRQF_DISABLED, | |
af128a10 | 2142 | dev_name(&pdev->dev), pcdev); |
0d3244d6 MD |
2143 | if (err) { |
2144 | dev_err(&pdev->dev, "Unable to register CEU interrupt.\n"); | |
2145 | goto exit_release_mem; | |
2146 | } | |
2147 | ||
6d1386c6 MD |
2148 | pm_suspend_ignore_children(&pdev->dev, true); |
2149 | pm_runtime_enable(&pdev->dev); | |
2150 | pm_runtime_resume(&pdev->dev); | |
a42b6dd6 | 2151 | |
0d3244d6 | 2152 | pcdev->ici.priv = pcdev; |
979ea1dd | 2153 | pcdev->ici.v4l2_dev.dev = &pdev->dev; |
0d3244d6 | 2154 | pcdev->ici.nr = pdev->id; |
af128a10 KS |
2155 | pcdev->ici.drv_name = dev_name(&pdev->dev); |
2156 | pcdev->ici.ops = &sh_mobile_ceu_host_ops; | |
fc13baff | 2157 | pcdev->ici.capabilities = SOCAM_HOST_CAP_STRIDE; |
0d3244d6 | 2158 | |
6b526fed GL |
2159 | pcdev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); |
2160 | if (IS_ERR(pcdev->alloc_ctx)) { | |
2161 | err = PTR_ERR(pcdev->alloc_ctx); | |
2162 | goto exit_free_clk; | |
2163 | } | |
2164 | ||
2165 | err = soc_camera_host_register(&pcdev->ici); | |
2166 | if (err) | |
2167 | goto exit_free_ctx; | |
2168 | ||
b3b5020d | 2169 | /* CSI2 interfacing */ |
6b526fed | 2170 | csi2 = pcdev->pdata->csi2; |
b3b5020d | 2171 | if (csi2) { |
6b526fed GL |
2172 | struct platform_device *csi2_pdev = |
2173 | platform_device_alloc("sh-mobile-csi2", csi2->id); | |
2174 | struct sh_csi2_pdata *csi2_pdata = csi2->platform_data; | |
2175 | ||
2176 | if (!csi2_pdev) { | |
2177 | err = -ENOMEM; | |
2178 | goto exit_host_unregister; | |
2179 | } | |
2180 | ||
2181 | pcdev->csi2_pdev = csi2_pdev; | |
2182 | ||
2183 | err = platform_device_add_data(csi2_pdev, csi2_pdata, sizeof(*csi2_pdata)); | |
2184 | if (err < 0) | |
2185 | goto exit_pdev_put; | |
2186 | ||
2187 | csi2_pdata = csi2_pdev->dev.platform_data; | |
2188 | csi2_pdata->v4l2_dev = &pcdev->ici.v4l2_dev; | |
2189 | ||
2190 | csi2_pdev->resource = csi2->resource; | |
2191 | csi2_pdev->num_resources = csi2->num_resources; | |
2192 | ||
2193 | err = platform_device_add(csi2_pdev); | |
2194 | if (err < 0) | |
2195 | goto exit_pdev_put; | |
2196 | ||
2197 | wait.dev = &csi2_pdev->dev; | |
b3b5020d GL |
2198 | |
2199 | err = bus_register_notifier(&platform_bus_type, &wait.notifier); | |
2200 | if (err < 0) | |
6b526fed | 2201 | goto exit_pdev_unregister; |
b3b5020d GL |
2202 | |
2203 | /* | |
2204 | * From this point the driver module will not unload, until | |
2205 | * we complete the completion. | |
2206 | */ | |
2207 | ||
6b526fed | 2208 | if (!csi2_pdev->dev.driver) { |
b3b5020d GL |
2209 | complete(&wait.completion); |
2210 | /* Either too late, or probing failed */ | |
2211 | bus_unregister_notifier(&platform_bus_type, &wait.notifier); | |
2212 | err = -ENXIO; | |
6b526fed | 2213 | goto exit_pdev_unregister; |
b3b5020d GL |
2214 | } |
2215 | ||
2216 | /* | |
2217 | * The module is still loaded, in the worst case it is hanging | |
2218 | * in device release on our completion. So, _now_ dereferencing | |
2219 | * the "owner" is safe! | |
2220 | */ | |
2221 | ||
6b526fed | 2222 | err = try_module_get(csi2_pdev->dev.driver->owner); |
b3b5020d GL |
2223 | |
2224 | /* Let notifier complete, if it has been locked */ | |
2225 | complete(&wait.completion); | |
2226 | bus_unregister_notifier(&platform_bus_type, &wait.notifier); | |
2227 | if (!err) { | |
2228 | err = -ENODEV; | |
6b526fed | 2229 | goto exit_pdev_unregister; |
b3b5020d GL |
2230 | } |
2231 | } | |
2232 | ||
0d3244d6 MD |
2233 | return 0; |
2234 | ||
6b526fed GL |
2235 | exit_pdev_unregister: |
2236 | platform_device_del(pcdev->csi2_pdev); | |
2237 | exit_pdev_put: | |
2238 | pcdev->csi2_pdev->resource = NULL; | |
2239 | platform_device_put(pcdev->csi2_pdev); | |
2240 | exit_host_unregister: | |
2241 | soc_camera_host_unregister(&pcdev->ici); | |
a616898d GL |
2242 | exit_free_ctx: |
2243 | vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); | |
055e05a0 KM |
2244 | exit_free_clk: |
2245 | pm_runtime_disable(&pdev->dev); | |
0d3244d6 MD |
2246 | free_irq(pcdev->irq, pcdev); |
2247 | exit_release_mem: | |
2248 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
2249 | dma_release_declared_memory(&pdev->dev); | |
2250 | exit_iounmap: | |
2251 | iounmap(base); | |
2252 | exit_kfree: | |
2253 | kfree(pcdev); | |
2254 | exit: | |
2255 | return err; | |
2256 | } | |
2257 | ||
979ea1dd | 2258 | static int __devexit sh_mobile_ceu_remove(struct platform_device *pdev) |
0d3244d6 | 2259 | { |
eff505fa GL |
2260 | struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); |
2261 | struct sh_mobile_ceu_dev *pcdev = container_of(soc_host, | |
2262 | struct sh_mobile_ceu_dev, ici); | |
6b526fed | 2263 | struct platform_device *csi2_pdev = pcdev->csi2_pdev; |
0d3244d6 | 2264 | |
eff505fa | 2265 | soc_camera_host_unregister(soc_host); |
055e05a0 | 2266 | pm_runtime_disable(&pdev->dev); |
0d3244d6 MD |
2267 | free_irq(pcdev->irq, pcdev); |
2268 | if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) | |
2269 | dma_release_declared_memory(&pdev->dev); | |
2270 | iounmap(pcdev->base); | |
a616898d | 2271 | vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); |
6b526fed GL |
2272 | if (csi2_pdev && csi2_pdev->dev.driver) { |
2273 | struct module *csi2_drv = csi2_pdev->dev.driver->owner; | |
2274 | platform_device_del(csi2_pdev); | |
2275 | csi2_pdev->resource = NULL; | |
2276 | platform_device_put(csi2_pdev); | |
2277 | module_put(csi2_drv); | |
2278 | } | |
0d3244d6 | 2279 | kfree(pcdev); |
b3b5020d | 2280 | |
0d3244d6 MD |
2281 | return 0; |
2282 | } | |
2283 | ||
6d1386c6 MD |
2284 | static int sh_mobile_ceu_runtime_nop(struct device *dev) |
2285 | { | |
2286 | /* Runtime PM callback shared between ->runtime_suspend() | |
2287 | * and ->runtime_resume(). Simply returns success. | |
2288 | * | |
2289 | * This driver re-initializes all registers after | |
2290 | * pm_runtime_get_sync() anyway so there is no need | |
2291 | * to save and restore registers here. | |
2292 | */ | |
2293 | return 0; | |
2294 | } | |
2295 | ||
47145210 | 2296 | static const struct dev_pm_ops sh_mobile_ceu_dev_pm_ops = { |
6d1386c6 MD |
2297 | .runtime_suspend = sh_mobile_ceu_runtime_nop, |
2298 | .runtime_resume = sh_mobile_ceu_runtime_nop, | |
2299 | }; | |
2300 | ||
0d3244d6 MD |
2301 | static struct platform_driver sh_mobile_ceu_driver = { |
2302 | .driver = { | |
2303 | .name = "sh_mobile_ceu", | |
6d1386c6 | 2304 | .pm = &sh_mobile_ceu_dev_pm_ops, |
0d3244d6 MD |
2305 | }, |
2306 | .probe = sh_mobile_ceu_probe, | |
50e55fd1 | 2307 | .remove = __devexit_p(sh_mobile_ceu_remove), |
0d3244d6 MD |
2308 | }; |
2309 | ||
2310 | static int __init sh_mobile_ceu_init(void) | |
2311 | { | |
b3b5020d GL |
2312 | /* Whatever return code */ |
2313 | request_module("sh_mobile_csi2"); | |
0d3244d6 MD |
2314 | return platform_driver_register(&sh_mobile_ceu_driver); |
2315 | } | |
2316 | ||
2317 | static void __exit sh_mobile_ceu_exit(void) | |
2318 | { | |
01c1e4ca | 2319 | platform_driver_unregister(&sh_mobile_ceu_driver); |
0d3244d6 MD |
2320 | } |
2321 | ||
2322 | module_init(sh_mobile_ceu_init); | |
2323 | module_exit(sh_mobile_ceu_exit); | |
2324 | ||
2325 | MODULE_DESCRIPTION("SuperH Mobile CEU driver"); | |
2326 | MODULE_AUTHOR("Magnus Damm"); | |
2327 | MODULE_LICENSE("GPL"); | |
64dc3c1a | 2328 | MODULE_VERSION("0.0.6"); |
40e2e092 | 2329 | MODULE_ALIAS("platform:sh_mobile_ceu"); |